680687400 has 48 divisors (see below), whose sum is σ = 2110132800. Its totient is φ = 181516480.

The previous prime is 680687393. The next prime is 680687419. The reversal of 680687400 is 4786086.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 566640 + ... + 567839.

It is an arithmetic number, because the mean of its divisors is an integer number (43961100).

Almost surely, 2^680687400 is an apocalyptic number.

680687400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680687400 is an abundant number, since it is smaller than the sum of its proper divisors (1429445400).

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

680687400 is a wasteful number, since it uses less digits than its factorization.

680687400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134498 (or 1134489 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 680687400 is about 26089.9865848950. The cubic root of 680687400 is about 879.6621464772.

The spelling of 680687400 in words is "six hundred eighty million, six hundred eighty-seven thousand, four hundred".