664514406 has 24 divisors (see below), whose sum is σ = 1455962040. Its totient is φ = 219015456.

The previous prime is 664514393. The next prime is 664514423. The reversal of 664514406 is 604415466.

664514406 is a `hidden beast` number, since 6 + 645 + 1 + 4 + 4 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205800 + ... + 209003.

It is an arithmetic number, because the mean of its divisors is an integer number (60665085).

Almost surely, 2^664514406 is an apocalyptic number.

664514406 is an abundant number, since it is smaller than the sum of its proper divisors (791447634).

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

664514406 is a wasteful number, since it uses less digits than its factorization.

664514406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414900 (or 414897 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 664514406 is about 25778.1769332123. The cubic root of 664514406 is about 872.6393648257.

The spelling of 664514406 in words is "six hundred sixty-four million, five hundred fourteen thousand, four hundred six".