664710364704 has 96 divisors (see below), whose sum is σ = 1807882917120. Its totient is φ = 213673807872.

The previous prime is 664710364691. The next prime is 664710364727. The reversal of 664710364704 is 407463017466.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426664 + ... + 1229415.

It is an arithmetic number, because the mean of its divisors is an integer number (18832113720).

Almost surely, 2^664710364704 is an apocalyptic number.

It is an amenable number.

664710364704 is an abundant number, since it is smaller than the sum of its proper divisors (1143172552416).

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

664710364704 is a wasteful number, since it uses less digits than its factorization.

664710364704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656242 (or 1656234 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 48.

The spelling of 664710364704 in words is "six hundred sixty-four billion, seven hundred ten million, three hundred sixty-four thousand, seven hundred four".