664614584 has 16 divisors (see below), whose sum is σ = 1247533920. Its totient is φ = 331938880.

The previous prime is 664614583. The next prime is 664614631. The reversal of 664614584 is 485416466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664614583) 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 3 ways as a sum of consecutive naturals, for example, 38309 + ... + 52884.

It is an arithmetic number, because the mean of its divisors is an integer number (77970870).

Almost surely, 2^664614584 is an apocalyptic number.

It is an amenable number.

664614584 is a deficient number, since it is larger than the sum of its proper divisors (582919336).

664614584 is a wasteful number, since it uses less digits than its factorization.

664614584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92110 (or 92106 counting only the distinct ones).

The product of its digits is 552960, while the sum is 44.

The square root of 664614584 is about 25780.1199376574. The cubic root of 664614584 is about 872.6832138243.

The spelling of 664614584 in words is "six hundred sixty-four million, six hundred fourteen thousand, five hundred eighty-four".