664030764 has 48 divisors (see below), whose sum is σ = 1723075200. Its totient is φ = 221149008.

The previous prime is 664030739. The next prime is 664030789. The reversal of 664030764 is 467030466.

664030764 is a `hidden beast` number, since 6 + 640 + 3 + 0 + 7 + 6 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (664030739) and next prime (664030789).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173827 + ... + 177605.

It is an arithmetic number, because the mean of its divisors is an integer number (35897400).

Almost surely, 2^664030764 is an apocalyptic number.

It is an amenable number.

664030764 is an abundant number, since it is smaller than the sum of its proper divisors (1059044436).

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

664030764 is a wasteful number, since it uses less digits than its factorization.

664030764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5419 (or 5411 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 664030764 is about 25768.7943839055. The cubic root of 664030764 is about 872.4276074506.

The spelling of 664030764 in words is "six hundred sixty-four million, thirty thousand, seven hundred sixty-four".