680674840 has 32 divisors (see below), whose sum is σ = 1536439680. Its totient is φ = 271395072.

The previous prime is 680674837. The next prime is 680674859. The reversal of 680674840 is 48476086.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14664 + ... + 39703.

It is an arithmetic number, because the mean of its divisors is an integer number (48013740).

Almost surely, 2^680674840 is an apocalyptic number.

It is an amenable number.

680674840 is an abundant number, since it is smaller than the sum of its proper divisors (855764840).

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

680674840 is a wasteful number, since it uses less digits than its factorization.

680674840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54691 (or 54687 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 680674840 is about 26089.7458784098. The cubic root of 680674840 is about 879.6567359542.

The spelling of 680674840 in words is "six hundred eighty million, six hundred seventy-four thousand, eight hundred forty".