65905944 has 48 divisors (see below), whose sum is σ = 178425000. Its totient is φ = 20277504.

The previous prime is 65905921. The next prime is 65905999. The reversal of 65905944 is 44950956.

It is a happy number.

It is a super-2 number, since 2×65905944² = 8687186909062272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65905896 and 65905905.

It is a congruent number.

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, 4069 + ... + 12180.

Almost surely, 2^65905944 is an apocalyptic number.

It is an amenable number.

65905944 is an abundant number, since it is smaller than the sum of its proper divisors (112519056).

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

65905944 is a wasteful number, since it uses less digits than its factorization.

65905944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16284 (or 16267 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 65905944 is about 8118.2475941548. The cubic root of 65905944 is about 403.9319396507.

The spelling of 65905944 in words is "sixty-five million, nine hundred five thousand, nine hundred forty-four".