680401964 has 24 divisors (see below), whose sum is σ = 1299622800. Its totient is φ = 309113280.

The previous prime is 680401961. The next prime is 680402039. The reversal of 680401964 is 469104086.

It is not an unprimeable number, because it can be changed into a prime (680401961) 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, 139682 + ... + 144470.

It is an arithmetic number, because the mean of its divisors is an integer number (54150950).

Almost surely, 2^680401964 is an apocalyptic number.

It is an amenable number.

680401964 is a deficient number, since it is larger than the sum of its proper divisors (619220836).

680401964 is a wasteful number, since it uses less digits than its factorization.

680401964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8033 (or 8031 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 680401964 is about 26084.5157900238. The cubic root of 680401964 is about 879.5391715995.

The spelling of 680401964 in words is "six hundred eighty million, four hundred one thousand, nine hundred sixty-four".