664655160 has 64 divisors (see below), whose sum is σ = 2147352480. Its totient is φ = 163607040.

The previous prime is 664655143. The next prime is 664655179. The reversal of 664655160 is 61556466.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

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, 211471 + ... + 214590.

Almost surely, 2^664655160 is an apocalyptic number.

664655160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

664655160 is an abundant number, since it is smaller than the sum of its proper divisors (1482697320).

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

664655160 is a wasteful number, since it uses less digits than its factorization.

664655160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426088 (or 426084 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 664655160 is about 25780.9068886259. The cubic root of 664655160 is about 872.7009731263.

The spelling of 664655160 in words is "six hundred sixty-four million, six hundred fifty-five thousand, one hundred sixty".