64166976 has 84 divisors (see below), whose sum is σ = 194771772. Its totient is φ = 20127744.

The previous prime is 64166969. The next prime is 64166981. The reversal of 64166976 is 67966146.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36288576 + 27878400 = 6024^2 + 5280^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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, 6516 + ... + 13068.

Almost surely, 2^64166976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64166976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97385886).

64166976 is an abundant number, since it is smaller than the sum of its proper divisors (130604796).

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

64166976 is a wasteful number, since it uses less digits than its factorization.

64166976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6588 (or 6575 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 64166976 is about 8010.4292019841. The cubic root of 64166976 is about 400.3475645764.

The spelling of 64166976 in words is "sixty-four million, one hundred sixty-six thousand, nine hundred seventy-six".