64901888 has 36 divisors (see below), whose sum is σ = 131776680. Its totient is φ = 31893504.

The previous prime is 64901887. The next prime is 64901923. The reversal of 64901888 is 88810946.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (64901887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12956 + ... + 17252.

Almost surely, 2^64901888 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 64901888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65888340).

64901888 is an abundant number, since it is smaller than the sum of its proper divisors (66874792).

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

64901888 is an equidigital number, since it uses as much as digits as its factorization.

64901888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4372 (or 4358 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 64901888 is about 8056.1708025587. The cubic root of 64901888 is about 401.8701758122.

The spelling of 64901888 in words is "sixty-four million, nine hundred one thousand, eight hundred eighty-eight".