664365006 has 24 divisors (see below), whose sum is σ = 1440078120. Its totient is φ = 221359536.

The previous prime is 664364983. The next prime is 664365011. The reversal of 664365006 is 600563466.

664365006 is a `hidden beast` number, since 6 + 643 + 6 + 5 + 0 + 0 + 6 = 666.

It is a super-2 number, since 2×664365006² = 882761722394760072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44196 + ... + 57288.

It is an arithmetic number, because the mean of its divisors is an integer number (60003255).

Almost surely, 2^664365006 is an apocalyptic number.

664365006 is an abundant number, since it is smaller than the sum of its proper divisors (775713114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664365006 is a wasteful number, since it uses less digits than its factorization.

664365006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15920 (or 15917 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 664365006 is about 25775.2789703623. The cubic root of 664365006 is about 872.5739626355.

The spelling of 664365006 in words is "six hundred sixty-four million, three hundred sixty-five thousand, six".