664562424 has 16 divisors (see below), whose sum is σ = 1661406120. Its totient is φ = 221520800.

The previous prime is 664562401. The next prime is 664562441. The reversal of 664562424 is 424265466.

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 3 ways as a sum of consecutive naturals, for example, 13845027 + ... + 13845074.

Almost surely, 2^664562424 is an apocalyptic number.

It is an amenable number.

664562424 is an abundant number, since it is smaller than the sum of its proper divisors (996843696).

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

664562424 is a wasteful number, since it uses less digits than its factorization.

664562424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27690110 (or 27690106 counting only the distinct ones).

The product of its digits is 276480, while the sum is 39.

The square root of 664562424 is about 25779.1082855866. The cubic root of 664562424 is about 872.6603833757.

The spelling of 664562424 in words is "six hundred sixty-four million, five hundred sixty-two thousand, four hundred twenty-four".