664724376 has 48 divisors (see below), whose sum is σ = 1810387800. Its totient is φ = 220332672.

The previous prime is 664724371. The next prime is 664724393. The reversal of 664724376 is 673427466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664724371) by changing a digit.

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, 12901 + ... + 38676.

Almost surely, 2^664724376 is an apocalyptic number.

It is an amenable number.

664724376 is an abundant number, since it is smaller than the sum of its proper divisors (1145663424).

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

664724376 is a wasteful number, since it uses less digits than its factorization.

664724376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51768 (or 51761 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 45.

The square root of 664724376 is about 25782.2492424536. The cubic root of 664724376 is about 872.7312659145.

The spelling of 664724376 in words is "six hundred sixty-four million, seven hundred twenty-four thousand, three hundred seventy-six".