64115868 has 24 divisors (see below), whose sum is σ = 154763280. Its totient is φ = 20634880.

The previous prime is 64115803. The next prime is 64115879. The reversal of 64115868 is 86851146.

64115868 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 2×64115868² = 8221689058786848, 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 7 ways as a sum of consecutive naturals, for example, 91773 + ... + 92468.

It is an arithmetic number, because the mean of its divisors is an integer number (6448470).

Almost surely, 2^64115868 is an apocalyptic number.

It is an amenable number.

64115868 is an abundant number, since it is smaller than the sum of its proper divisors (90647412).

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

64115868 is a wasteful number, since it uses less digits than its factorization.

64115868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184277 (or 184275 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 64115868 is about 8007.2384752797. The cubic root of 64115868 is about 400.2412461382.

The spelling of 64115868 in words is "sixty-four million, one hundred fifteen thousand, eight hundred sixty-eight".