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680969960580 = 2235713128996757
BaseRepresentation
bin10011110100011001111…
…10001111110010000100
32102002200222010020021010
421322030332033302010
542124111302214310
61240455553322220
7100125033106020
oct11721476176204
92362628106233
10680969960580
11242885876398
12abb87566370
134c2a4a125a0
1424d5db8b380
1512aa8587320
hex9e8cf8fc84

680969960580 has 192 divisors, whose sum is σ = 2348572101120. Its totient is φ = 143564230656.

The previous prime is 680969960569. The next prime is 680969960611. The reversal of 680969960580 is 85069969086.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6989562 + ... + 7086318.

It is an arithmetic number, because the mean of its divisors is an integer number (12232146360).

Almost surely, 2680969960580 is an apocalyptic number.

680969960580 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 680969960580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1174286050560).

680969960580 is an abundant number, since it is smaller than the sum of its proper divisors (1667602140540).

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

680969960580 is a wasteful number, since it uses less digits than its factorization.

680969960580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98078 (or 98076 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 66.

The spelling of 680969960580 in words is "six hundred eighty billion, nine hundred sixty-nine million, nine hundred sixty thousand, five hundred eighty".