64117912 has 16 divisors (see below), whose sum is σ = 121389840. Its totient is φ = 31747296.

The previous prime is 64117903. The next prime is 64117981. The reversal of 64117912 is 21971146.

64117912 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 2×64117912² = 8222213278479488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 38083 + ... + 39730.

It is an arithmetic number, because the mean of its divisors is an integer number (7586865).

Almost surely, 2^64117912 is an apocalyptic number.

It is an amenable number.

64117912 is a deficient number, since it is larger than the sum of its proper divisors (57271928).

64117912 is a wasteful number, since it uses less digits than its factorization.

64117912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77922 (or 77918 counting only the distinct ones).

The product of its digits is 3024, while the sum is 31.

The square root of 64117912 is about 8007.3661087776. The cubic root of 64117912 is about 400.2454992944.

The spelling of 64117912 in words is "sixty-four million, one hundred seventeen thousand, nine hundred twelve".