666465508 has 12 divisors (see below), whose sum is σ = 1227699760. Its totient is φ = 315694152.

The previous prime is 666465487. The next prime is 666465551. The reversal of 666465508 is 805564666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4384566 + ... + 4384717.

Almost surely, 2^666465508 is an apocalyptic number.

It is an amenable number.

666465508 is a deficient number, since it is larger than the sum of its proper divisors (561234252).

666465508 is a wasteful number, since it uses less digits than its factorization.

666465508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8769306 (or 8769304 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The square root of 666465508 is about 25815.9932599929. The cubic root of 666465508 is about 873.4925917567.

The spelling of 666465508 in words is "six hundred sixty-six million, four hundred sixty-five thousand, five hundred eight".