64887264 has 192 divisors, whose sum is σ = 209563200. Its totient is φ = 19408896.

The previous prime is 64887227. The next prime is 64887271. The reversal of 64887264 is 46278846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 595242 + ... + 595350.

It is an arithmetic number, because the mean of its divisors is an integer number (1091475).

Almost surely, 2^64887264 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 64887264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104781600).

64887264 is an abundant number, since it is smaller than the sum of its proper divisors (144675936).

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

64887264 is a wasteful number, since it uses less digits than its factorization.

64887264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 180 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 64887264 is about 8055.2631241940. The cubic root of 64887264 is about 401.8399897827.

The spelling of 64887264 in words is "sixty-four million, eight hundred eighty-seven thousand, two hundred sixty-four".