664363616 has 24 divisors (see below), whose sum is σ = 1494818640. Its totient is φ = 284727168.

The previous prime is 664363613. The next prime is 664363663. The reversal of 664363616 is 616363466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664363613) 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 3 ways as a sum of consecutive naturals, for example, 1482731 + ... + 1483178.

It is an arithmetic number, because the mean of its divisors is an integer number (62284110).

Almost surely, 2^664363616 is an apocalyptic number.

It is an amenable number.

664363616 is an abundant number, since it is smaller than the sum of its proper divisors (830455024).

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

664363616 is a wasteful number, since it uses less digits than its factorization.

664363616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965926 (or 2965918 counting only the distinct ones).

The product of its digits is 279936, while the sum is 41.

The square root of 664363616 is about 25775.2520065275. The cubic root of 664363616 is about 872.5733540952.

The spelling of 664363616 in words is "six hundred sixty-four million, three hundred sixty-three thousand, six hundred sixteen".