64173712 has 10 divisors (see below), whose sum is σ = 124336598. Its totient is φ = 32086848.

The previous prime is 64173709. The next prime is 64173713. The reversal of 64173712 is 21737146.

64173712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 58003456 + 6170256 = 7616^2 + 2484^2 .

It is not an unprimeable number, because it can be changed into a prime (64173713) 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 as a sum of consecutive naturals, namely, 2005413 + ... + 2005444.

Almost surely, 2^64173712 is an apocalyptic number.

It is an amenable number.

64173712 is a deficient number, since it is larger than the sum of its proper divisors (60162886).

64173712 is a wasteful number, since it uses less digits than its factorization.

64173712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4010865 (or 4010859 counting only the distinct ones).

The product of its digits is 7056, while the sum is 31.

The square root of 64173712 is about 8010.8496428282. The cubic root of 64173712 is about 400.3615730638.

The spelling of 64173712 in words is "sixty-four million, one hundred seventy-three thousand, seven hundred twelve".