680972 has 6 divisors (see below), whose sum is σ = 1191708. Its totient is φ = 340484.

The previous prime is 680971. The next prime is 680987. The reversal of 680972 is 279086.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (680971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85118 + ... + 85125.

It is an arithmetic number, because the mean of its divisors is an integer number (198618).

2⁶⁸⁰⁹⁷² is an apocalyptic number.

It is an amenable number.

680972 is a deficient number, since it is larger than the sum of its proper divisors (510736).

680972 is a wasteful number, since it uses less digits than its factorization.

680972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170247 (or 170245 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 680972 is about 825.2102762327. The cubic root of 680972 is about 87.9784726957.

The spelling of 680972 in words is "six hundred eighty thousand, nine hundred seventy-two".