664055163 has 12 divisors (see below), whose sum is σ = 959594688. Its totient is φ = 442517040.

The previous prime is 664055129. The next prime is 664055167. The reversal of 664055163 is 361550466.

664055163 is a `hidden beast` number, since 6 + 6 + 40 + 551 + 63 = 666.

It is not a de Polignac number, because 664055163 - 2⁶ = 664055099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664055167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9081 + ... + 37557.

It is an arithmetic number, because the mean of its divisors is an integer number (79966224).

Almost surely, 2^664055163 is an apocalyptic number.

664055163 is a deficient number, since it is larger than the sum of its proper divisors (295539525).

664055163 is a wasteful number, since it uses less digits than its factorization.

664055163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31074 (or 31071 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 664055163 is about 25769.2678010067. The cubic root of 664055163 is about 872.4382927489.

The spelling of 664055163 in words is "six hundred sixty-four million, fifty-five thousand, one hundred sixty-three".