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689130711360 = 263457131915377
BaseRepresentation
bin10100000011100110110…
…01000010100101000000
32102212202201000022210000
422001303121002211000
542242314430230420
61244325434440000
7100534205253240
oct12016331024500
92385681008700
10689130711360
11246293359223
12b1684593000
134cca5649ac0
14254d593bb20
1512dd4c37690
hexa073642940

689130711360 has 1120 divisors, whose sum is σ = 3176056477440. Its totient is φ = 137737469952.

The previous prime is 689130711323. The next prime is 689130711361. The reversal of 689130711360 is 63117031986.

It is a tau number, because it is divible by the number of its divisors (1120).

It is a super-2 number, since 2×6891307113602 (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689130711361) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 44807992 + ... + 44823368.

It is an arithmetic number, because the mean of its divisors is an integer number (2835764712).

Almost surely, 2689130711360 is an apocalyptic number.

689130711360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689130711360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1588028238720).

689130711360 is an abundant number, since it is smaller than the sum of its proper divisors (2486925766080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689130711360 is a wasteful number, since it uses less digits than its factorization.

689130711360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15445 (or 15426 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 689130711360 in words is "six hundred eighty-nine billion, one hundred thirty million, seven hundred eleven thousand, three hundred sixty".