680339816 has 32 divisors (see below), whose sum is σ = 1433496960. Its totient is φ = 300349632.

The previous prime is 680339791. The next prime is 680339819. The reversal of 680339816 is 618933086.

It is not an unprimeable number, because it can be changed into a prime (680339819) 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, 139820 + ... + 144603.

It is an arithmetic number, because the mean of its divisors is an integer number (44796780).

Almost surely, 2^680339816 is an apocalyptic number.

It is an amenable number.

680339816 is an abundant number, since it is smaller than the sum of its proper divisors (753157144).

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

680339816 is a wasteful number, since it uses less digits than its factorization.

680339816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284465 (or 284461 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 680339816 is about 26083.3244813617. The cubic root of 680339816 is about 879.5123917117.

The spelling of 680339816 in words is "six hundred eighty million, three hundred thirty-nine thousand, eight hundred sixteen".