65730944 has 32 divisors (see below), whose sum is σ = 134497200. Its totient is φ = 31974912.

The previous prime is 65730919. The next prime is 65731007. The reversal of 65730944 is 44903756.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×65730944² = 8641113998262272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65730898 and 65730907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2204 + ... + 11675.

Almost surely, 2^65730944 is an apocalyptic number.

65730944 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65730944 is an abundant number, since it is smaller than the sum of its proper divisors (68766256).

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

65730944 is a wasteful number, since it uses less digits than its factorization.

65730944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13930 (or 13918 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 65730944 is about 8107.4622416635. The cubic root of 65730944 is about 403.5741026908.

The spelling of 65730944 in words is "sixty-five million, seven hundred thirty thousand, nine hundred forty-four".