680871936 has 48 divisors (see below), whose sum is σ = 1815231600. Its totient is φ = 226955264.

The previous prime is 680871911. The next prime is 680871943. The reversal of 680871936 is 639178086.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49266 + ... + 61553.

It is an arithmetic number, because the mean of its divisors is an integer number (37817325).

Almost surely, 2^680871936 is an apocalyptic number.

It is an amenable number.

680871936 is an abundant number, since it is smaller than the sum of its proper divisors (1134359664).

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

680871936 is a wasteful number, since it uses less digits than its factorization.

680871936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110844 (or 110824 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 680871936 is about 26093.5228744606. The cubic root of 680871936 is about 879.7416321396.

The spelling of 680871936 in words is "six hundred eighty million, eight hundred seventy-one thousand, nine hundred thirty-six".