664115160 has 64 divisors (see below), whose sum is σ = 2011726080. Its totient is φ = 175374720.

The previous prime is 664115147. The next prime is 664115161. The reversal of 664115160 is 61511466.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664115161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14506 + ... + 39225.

It is an arithmetic number, because the mean of its divisors is an integer number (31433220).

Almost surely, 2^664115160 is an apocalyptic number.

664115160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

664115160 is an abundant number, since it is smaller than the sum of its proper divisors (1347610920).

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

664115160 is a wasteful number, since it uses less digits than its factorization.

664115160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53848 (or 53844 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 664115160 is about 25770.4318939361. The cubic root of 664115160 is about 872.4645667228.

The spelling of 664115160 in words is "six hundred sixty-four million, one hundred fifteen thousand, one hundred sixty".