65565516 has 12 divisors (see below), whose sum is σ = 152986232. Its totient is φ = 21855168.

The previous prime is 65565509. The next prime is 65565529. The reversal of 65565516 is 61556556.

It is a tau number, because it is divible by the number of its divisors (12).

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, 2731885 + ... + 2731908.

Almost surely, 2^65565516 is an apocalyptic number.

It is an amenable number.

65565516 is an abundant number, since it is smaller than the sum of its proper divisors (87420716).

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

65565516 is a wasteful number, since it uses less digits than its factorization.

65565516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5463800 (or 5463798 counting only the distinct ones).

The product of its digits is 135000, while the sum is 39.

The square root of 65565516 is about 8097.2536084774. The cubic root of 65565516 is about 403.2352539485.

The spelling of 65565516 in words is "sixty-five million, five hundred sixty-five thousand, five hundred sixteen".