660976 has 20 divisors (see below), whose sum is σ = 1295800. Its totient is φ = 326592.

The previous prime is 660973. The next prime is 660983. The reversal of 660976 is 679066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1555 + ... + 1933.

It is an arithmetic number, because the mean of its divisors is an integer number (64790).

2⁶⁶⁰⁹⁷⁶ is an apocalyptic number.

It is an amenable number.

660976 is a deficient number, since it is larger than the sum of its proper divisors (634824).

660976 is a wasteful number, since it uses less digits than its factorization.

660976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 660976 is about 813.0043050317. The cubic root of 660976 is about 87.1087730950.

The spelling of 660976 in words is "six hundred sixty thousand, nine hundred seventy-six".