664953552 has 60 divisors (see below), whose sum is σ = 1941866784. Its totient is φ = 212013120.

The previous prime is 664953551. The next prime is 664953559. The reversal of 664953552 is 255359466.

664953552 is a `hidden beast` number, since 6 + 6 + 4 + 95 + 3 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 664953498 and 664953507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664953551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97074 + ... + 103697.

Almost surely, 2^664953552 is an apocalyptic number.

It is an amenable number.

664953552 is an abundant number, since it is smaller than the sum of its proper divisors (1276913232).

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

664953552 is a wasteful number, since it uses less digits than its factorization.

664953552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200808 (or 200799 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The square root of 664953552 is about 25786.6933126370. The cubic root of 664953552 is about 872.8315511287.

The spelling of 664953552 in words is "six hundred sixty-four million, nine hundred fifty-three thousand, five hundred fifty-two".