680442432 has 56 divisors (see below), whose sum is σ = 1849014336. Its totient is φ = 220681728.

The previous prime is 680442431. The next prime is 680442443. The reversal of 680442432 is 234244086.

It is a junction number, because it is equal to n+sod(n) for n = 680442393 and 680442402.

It is not an unprimeable number, because it can be changed into a prime (680442431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40788 + ... + 54995.

Almost surely, 2^680442432 is an apocalyptic number.

It is an amenable number.

680442432 is an abundant number, since it is smaller than the sum of its proper divisors (1168571904).

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

680442432 is a wasteful number, since it uses less digits than its factorization.

680442432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95835 (or 95825 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The square root of 680442432 is about 26085.2914877331. The cubic root of 680442432 is about 879.5566085890.

The spelling of 680442432 in words is "six hundred eighty million, four hundred forty-two thousand, four hundred thirty-two".