680686972 has 24 divisors (see below), whose sum is σ = 1362511584. Its totient is φ = 291479232.

The previous prime is 680686957. The next prime is 680686991. The reversal of 680686972 is 279686086.

680686972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26238 + ... + 45274.

It is an arithmetic number, because the mean of its divisors is an integer number (56771316).

Almost surely, 2^680686972 is an apocalyptic number.

It is an amenable number.

680686972 is an abundant number, since it is smaller than the sum of its proper divisors (681824612).

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

680686972 is a wasteful number, since it uses less digits than its factorization.

680686972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20325 (or 20323 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 680686972 is about 26089.9783825131. The cubic root of 680686972 is about 879.6619621069.

The spelling of 680686972 in words is "six hundred eighty million, six hundred eighty-six thousand, nine hundred seventy-two".