664885465080 has 32 divisors (see below), whose sum is σ = 1994656395600. Its totient is φ = 177302790656.

The previous prime is 664885465009. The next prime is 664885465157. The reversal of 664885465080 is 80564588466.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2770355985 + ... + 2770356224.

Almost surely, 2^664885465080 is an apocalyptic number.

664885465080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

664885465080 is an abundant number, since it is smaller than the sum of its proper divisors (1329770930520).

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

664885465080 is a wasteful number, since it uses less digits than its factorization.

664885465080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540712223 (or 5540712219 counting only the distinct ones).

The product of its (nonzero) digits is 44236800, while the sum is 60.

The spelling of 664885465080 in words is "six hundred sixty-four billion, eight hundred eighty-five million, four hundred sixty-five thousand, eighty".