451488664 has 16 divisors (see below), whose sum is σ = 923499720. Its totient is φ = 205222080.

The previous prime is 451488593. The next prime is 451488757. The reversal of 451488664 is 466884154.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2565189 + ... + 2565364.

Almost surely, 2^451488664 is an apocalyptic number.

451488664 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

451488664 is an abundant number, since it is smaller than the sum of its proper divisors (472011056).

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

451488664 is a wasteful number, since it uses less digits than its factorization.

451488664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5130570 (or 5130566 counting only the distinct ones).

The product of its digits is 737280, while the sum is 46.

The square root of 451488664 is about 21248.2626113290. The cubic root of 451488664 is about 767.1535224829.

The spelling of 451488664 in words is "four hundred fifty-one million, four hundred eighty-eight thousand, six hundred sixty-four".