64886976 has 378 divisors, whose sum is σ = 250324620. Its totient is φ = 15966720.

The previous prime is 64886959. The next prime is 64886989. The reversal of 64886976 is 67968846.

It is a nude number because it is divisible by every one of its digits.

Its product of digits (3483648) is a multiple of the sum of its prime divisors (42).

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 3415095 + ... + 3415113.

Almost surely, 2^64886976 is an apocalyptic number.

64886976 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64886976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125162310).

64886976 is an abundant number, since it is smaller than the sum of its proper divisors (185437644).

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

64886976 is a wasteful number, since it uses less digits than its factorization.

64886976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 42 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 64886976 is about 8055.2452476632. The cubic root of 64886976 is about 401.8393952640.

The spelling of 64886976 in words is "sixty-four million, eight hundred eighty-six thousand, nine hundred seventy-six".