64163172 has 48 divisors (see below), whose sum is σ = 152566400. Its totient is φ = 20984832.

The previous prime is 64163161. The next prime is 64163173. The reversal of 64163172 is 27136146.

64163172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64163172² = 8233825282203168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64163173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231498 + ... + 231774.

Almost surely, 2^64163172 is an apocalyptic number.

It is an amenable number.

64163172 is an abundant number, since it is smaller than the sum of its proper divisors (88403228).

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

64163172 is a wasteful number, since it uses less digits than its factorization.

64163172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 578 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 64163172 is about 8010.1917580043. The cubic root of 64163172 is about 400.3396531743.

The spelling of 64163172 in words is "sixty-four million, one hundred sixty-three thousand, one hundred seventy-two".