64566880 has 48 divisors (see below), whose sum is σ = 174333600. Its totient is φ = 22136832.

The previous prime is 64566871. The next prime is 64566899. The reversal of 64566880 is 8866546.

64566880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 27705 + ... + 29944.

It is an arithmetic number, because the mean of its divisors is an integer number (3631950).

Almost surely, 2^64566880 is an apocalyptic number.

It is an amenable number.

64566880 is an abundant number, since it is smaller than the sum of its proper divisors (109766720).

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

64566880 is a wasteful number, since it uses less digits than its factorization.

64566880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57671 (or 57663 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 64566880 is about 8035.3518902410. The cubic root of 64566880 is about 401.1775301553.

The spelling of 64566880 in words is "sixty-four million, five hundred sixty-six thousand, eight hundred eighty".