662623664 has 10 divisors (see below), whose sum is σ = 1283833380. Its totient is φ = 331311824.

The previous prime is 662623627. The next prime is 662623693. The reversal of 662623664 is 466326266.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20706974 + ... + 20707005.

It is an arithmetic number, because the mean of its divisors is an integer number (128383338).

Almost surely, 2^662623664 is an apocalyptic number.

It is an amenable number.

662623664 is a deficient number, since it is larger than the sum of its proper divisors (621209716).

662623664 is a wasteful number, since it uses less digits than its factorization.

662623664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41413987 (or 41413981 counting only the distinct ones).

The product of its digits is 373248, while the sum is 41.

The square root of 662623664 is about 25741.4775022725. The cubic root of 662623664 is about 871.8109387275.

The spelling of 662623664 in words is "six hundred sixty-two million, six hundred twenty-three thousand, six hundred sixty-four".