65331944 has 16 divisors (see below), whose sum is σ = 122583300. Its totient is φ = 32643072.

The previous prime is 65331943. The next prime is 65331947. The reversal of 65331944 is 44913356.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64609444 + 722500 = 8038^2 + 850^2 .

It is not an unprimeable number, because it can be changed into a prime (65331943) 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, 19994 + ... + 23030.

Almost surely, 2^65331944 is an apocalyptic number.

It is an amenable number.

65331944 is a deficient number, since it is larger than the sum of its proper divisors (57251356).

65331944 is a wasteful number, since it uses less digits than its factorization.

65331944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732 (or 5728 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 65331944 is about 8082.8178254864. The cubic root of 65331944 is about 402.7558529160.

The spelling of 65331944 in words is "sixty-five million, three hundred thirty-one thousand, nine hundred forty-four".