680537764 has 12 divisors (see below), whose sum is σ = 1192028544. Its totient is φ = 339958184.

The previous prime is 680537743. The next prime is 680537783. The reversal of 680537764 is 467735086.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72712 + ... + 81535.

It is an arithmetic number, because the mean of its divisors is an integer number (99335712).

Almost surely, 2^680537764 is an apocalyptic number.

It is an amenable number.

680537764 is a deficient number, since it is larger than the sum of its proper divisors (511490780).

680537764 is a wasteful number, since it uses less digits than its factorization.

680537764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155354 (or 155352 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

The square root of 680537764 is about 26087.1187370319. The cubic root of 680537764 is about 879.5976828328.

The spelling of 680537764 in words is "six hundred eighty million, five hundred thirty-seven thousand, seven hundred sixty-four".