451388664 has 48 divisors (see below), whose sum is σ = 1223487720. Its totient is φ = 150342720.

The previous prime is 451388653. The next prime is 451388723. The reversal of 451388664 is 466883154.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 177079 + ... + 179609.

Almost surely, 2^451388664 is an apocalyptic number.

It is an amenable number.

451388664 is an abundant number, since it is smaller than the sum of its proper divisors (772099056).

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

451388664 is a wasteful number, since it uses less digits than its factorization.

451388664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5020 (or 5013 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 451388664 is about 21245.9093474485. The cubic root of 451388664 is about 767.0968794831.

The spelling of 451388664 in words is "four hundred fifty-one million, three hundred eighty-eight thousand, six hundred sixty-four".