64877904 has 120 divisors (see below), whose sum is σ = 223513472. Its totient is φ = 17107200.

The previous prime is 64877861. The next prime is 64877921. The reversal of 64877904 is 40977846.

It is a self number, because there is not a number n which added to its sum of digits gives 64877904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10629 + ... + 15579.

Almost surely, 2^64877904 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 64877904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111756736).

64877904 is an abundant number, since it is smaller than the sum of its proper divisors (158635568).

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

64877904 is a wasteful number, since it uses less digits than its factorization.

64877904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4985 (or 4976 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 64877904 is about 8054.6821166325. The cubic root of 64877904 is about 401.8206670223.

The spelling of 64877904 in words is "sixty-four million, eight hundred seventy-seven thousand, nine hundred four".