680672 has 24 divisors (see below), whose sum is σ = 1360800. Its totient is φ = 335104.

The previous prime is 680657. The next prime is 680681. The reversal of 680672 is 276086.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680672.

It is an unprimeable number.

680672 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2729 + ... + 2967.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2⁶⁸⁰⁶⁷² is an apocalyptic number.

It is an amenable number.

680672 is a deficient number, since it is larger than the sum of its proper divisors (680128).

680672 is a wasteful number, since it uses less digits than its factorization.

680672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 680672 is about 825.0284843568. The cubic root of 680672 is about 87.9655512546.

The spelling of 680672 in words is "six hundred eighty thousand, six hundred seventy-two".