664092915800 has 48 divisors (see below), whose sum is σ = 1544668341000. Its totient is φ = 265524940800.

The previous prime is 664092915757. The next prime is 664092915809. The reversal of 664092915800 is 8519290466.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664092915809) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 226025 + ... + 1174424.

Almost surely, 2^664092915800 is an apocalyptic number.

It is an amenable number.

664092915800 is an abundant number, since it is smaller than the sum of its proper divisors (880575425200).

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

664092915800 is a wasteful number, since it uses less digits than its factorization.

664092915800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402836 (or 1402827 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 664092915800 in words is "six hundred sixty-four billion, ninety-two million, nine hundred fifteen thousand, eight hundred".