65003664 has 40 divisors (see below), whose sum is σ = 183193632. Its totient is φ = 19697920.

The previous prime is 65003657. The next prime is 65003669. The reversal of 65003664 is 46630056.

It is not an unprimeable number, because it can be changed into a prime (65003669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61029 + ... + 62084.

Almost surely, 2^65003664 is an apocalyptic number.

It is an amenable number.

65003664 is an abundant number, since it is smaller than the sum of its proper divisors (118189968).

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

65003664 is a wasteful number, since it uses less digits than its factorization.

65003664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123135 (or 123129 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 65003664 is about 8062.4849767302. The cubic root of 65003664 is about 402.0801305576.

The spelling of 65003664 in words is "sixty-five million, three thousand, six hundred sixty-four".