65990044 has 12 divisors (see below), whose sum is σ = 117376168. Its totient is φ = 32454000.

The previous prime is 65990011. The next prime is 65990053. The reversal of 65990044 is 44009956.

It is a junction number, because it is equal to n+sod(n) for n = 65989985 and 65990012.

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, 134982 + ... + 135469.

Almost surely, 2^65990044 is an apocalyptic number.

It is an amenable number.

65990044 is a deficient number, since it is larger than the sum of its proper divisors (51386124).

65990044 is a wasteful number, since it uses less digits than its factorization.

65990044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270516 (or 270514 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 65990044 is about 8123.4256320840. The cubic root of 65990044 is about 404.1036805426.

The spelling of 65990044 in words is "sixty-five million, nine hundred ninety thousand, forty-four".