64928896 has 48 divisors (see below), whose sum is σ = 132471990. Its totient is φ = 31696896.

The previous prime is 64928887. The next prime is 64928921. The reversal of 64928896 is 69882946.

It can be written as a sum of positive squares in only one way, i.e., 64641600 + 287296 = 8040^2 + 536^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 574536 + ... + 574648.

Almost surely, 2^64928896 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 64928896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66235995).

64928896 is an abundant number, since it is smaller than the sum of its proper divisors (67543094).

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

64928896 is an equidigital number, since it uses as much as digits as its factorization.

64928896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 182 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 52.

The square root of 64928896 is about 8057.8468588079. The cubic root of 64928896 is about 401.9259122726.

The spelling of 64928896 in words is "sixty-four million, nine hundred twenty-eight thousand, eight hundred ninety-six".