689724360 has 96 divisors (see below), whose sum is σ = 2414051640. Its totient is φ = 169777152.

The previous prime is 689724319. The next prime is 689724379. The reversal of 689724360 is 63427986.

It can be written as a sum of positive squares in 4 ways, for example, as 451392516 + 238331844 = 21246^2 + 15438^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69009 + ... + 78368.

Almost surely, 2^689724360 is an apocalyptic number.

689724360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

689724360 is an abundant number, since it is smaller than the sum of its proper divisors (1724327280).

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

689724360 is a wasteful number, since it uses less digits than its factorization.

689724360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147407 (or 147400 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 689724360 is about 26262.6038313036. The cubic root of 689724360 is about 883.5379095020.

The spelling of 689724360 in words is "six hundred eighty-nine million, seven hundred twenty-four thousand, three hundred sixty".