64115856 has 60 divisors (see below), whose sum is σ = 205072192. Its totient is φ = 18318528.

The previous prime is 64115803. The next prime is 64115879. The reversal of 64115856 is 65851146.

64115856 is a `hidden beast` number, since 64 + 11 + 585 + 6 = 666.

It is a super-2 number, since 2×64115856² = 8221685981225472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 64115856.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30796 + ... + 32811.

Almost surely, 2^64115856 is an apocalyptic number.

It is an amenable number.

64115856 is an abundant number, since it is smaller than the sum of its proper divisors (140956336).

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

64115856 is a wasteful number, since it uses less digits than its factorization.

64115856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63628 (or 63619 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 64115856 is about 8007.2377259577. The cubic root of 64115856 is about 400.2412211683.

The spelling of 64115856 in words is "sixty-four million, one hundred fifteen thousand, eight hundred fifty-six".