65456944 has 60 divisors (see below), whose sum is σ = 152668800. Its totient is φ = 27076224.

The previous prime is 65456939. The next prime is 65456971. The reversal of 65456944 is 44965456.

It is a super-2 number, since 2×65456944² = 8569223035638272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65456944.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21297 + ... + 24175.

It is an arithmetic number, because the mean of its divisors is an integer number (2544480).

Almost surely, 2^65456944 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 65456944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76334400).

65456944 is an abundant number, since it is smaller than the sum of its proper divisors (87211856).

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

65456944 is a wasteful number, since it uses less digits than its factorization.

65456944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930 (or 2917 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The square root of 65456944 is about 8090.5465822774. The cubic root of 65456944 is about 403.0125543319.

The spelling of 65456944 in words is "sixty-five million, four hundred fifty-six thousand, nine hundred forty-four".