664953862 has 8 divisors (see below), whose sum is σ = 1024388496. Its totient is φ = 323491032.

The previous prime is 664953859. The next prime is 664953871. The reversal of 664953862 is 268359466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4492858 + ... + 4493005.

It is an arithmetic number, because the mean of its divisors is an integer number (128048562).

Almost surely, 2^664953862 is an apocalyptic number.

664953862 is a deficient number, since it is larger than the sum of its proper divisors (359434634).

664953862 is a wasteful number, since it uses less digits than its factorization.

664953862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8985902.

The product of its digits is 1866240, while the sum is 49.

The square root of 664953862 is about 25786.6993234885. The cubic root of 664953862 is about 872.8316867662.

The spelling of 664953862 in words is "six hundred sixty-four million, nine hundred fifty-three thousand, eight hundred sixty-two".