689341140 has 36 divisors (see below), whose sum is σ = 2091002004. Its totient is φ = 183824256.

The previous prime is 689341139. The next prime is 689341189. The reversal of 689341140 is 41143986.

It can be written as a sum of positive squares in 2 ways, for example, as 495240516 + 194100624 = 22254^2 + 13932^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 689341095 and 689341104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1914657 + ... + 1915016.

It is an arithmetic number, because the mean of its divisors is an integer number (58083389).

Almost surely, 2^689341140 is an apocalyptic number.

689341140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

689341140 is an abundant number, since it is smaller than the sum of its proper divisors (1401660864).

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

689341140 is a wasteful number, since it uses less digits than its factorization.

689341140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3829688 (or 3829683 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 689341140 is about 26255.3068921314. The cubic root of 689341140 is about 883.3742440607.

The spelling of 689341140 in words is "six hundred eighty-nine million, three hundred forty-one thousand, one hundred forty".