680646960 has 120 divisors (see below), whose sum is σ = 2612407200. Its totient is φ = 155575296.

The previous prime is 680646959. The next prime is 680646971. The reversal of 680646960 is 69646086.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62485 + ... + 72564.

It is an arithmetic number, because the mean of its divisors is an integer number (21770060).

Almost surely, 2^680646960 is an apocalyptic number.

680646960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680646960 is an abundant number, since it is smaller than the sum of its proper divisors (1931760240).

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

680646960 is a wasteful number, since it uses less digits than its factorization.

680646960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135075 (or 135066 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 680646960 is about 26089.2115634030. The cubic root of 680646960 is about 879.6447257337.

The spelling of 680646960 in words is "six hundred eighty million, six hundred forty-six thousand, nine hundred sixty".