648976 has 20 divisors (see below), whose sum is σ = 1285632. Its totient is φ = 317216.

The previous prime is 648971. The next prime is 648997. The reversal of 648976 is 679846.

It is not an unprimeable number, because it can be changed into a prime (648971) 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, 321 + ... + 1183.

2⁶⁴⁸⁹⁷⁶ is an apocalyptic number.

648976 is the 510-th centered pentagonal number.

It is an amenable number.

648976 is a deficient number, since it is larger than the sum of its proper divisors (636656).

648976 is a wasteful number, since it uses less digits than its factorization.

648976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 912 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 648976 is about 805.5904666765. The cubic root of 648976 is about 86.5783979671.

The spelling of 648976 in words is "six hundred forty-eight thousand, nine hundred seventy-six".