664416317402604 has 96 divisors (see below), whose sum is σ = 1855088227399680. Its totient is φ = 204433285492800.

The previous prime is 664416317402561. The next prime is 664416317402609. The reversal of 664416317402604 is 406204713614466.

664416317402604 is a `hidden beast` number, since 6 + 6 + 4 + 4 + 16 + 3 + 17 + 4 + 0 + 2 + 604 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (664416317402609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113409349 + ... + 119123939.

It is an arithmetic number, because the mean of its divisors is an integer number (19323835702080).

Almost surely, 2^{664416317402604} is an apocalyptic number.

It is an amenable number.

664416317402604 is an abundant number, since it is smaller than the sum of its proper divisors (1190671909997076).

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

664416317402604 is a wasteful number, since it uses less digits than its factorization.

664416317402604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5797428 (or 5797420 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 54.

The spelling of 664416317402604 in words is "six hundred sixty-four trillion, four hundred sixteen billion, three hundred seventeen million, four hundred two thousand, six hundred four".