65565872 has 20 divisors (see below), whose sum is σ = 134507016. Its totient is φ = 30854400.

The previous prime is 65565859. The next prime is 65565901. The reversal of 65565872 is 27856556.

65565872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65565872² = 8597767142240768, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120254 + ... + 120797.

Almost surely, 2^65565872 is an apocalyptic number.

It is an amenable number.

65565872 is an abundant number, since it is smaller than the sum of its proper divisors (68941144).

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

65565872 is a wasteful number, since it uses less digits than its factorization.

65565872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241076 (or 241070 counting only the distinct ones).

The product of its digits is 504000, while the sum is 44.

The square root of 65565872 is about 8097.2755912097. The cubic root of 65565872 is about 403.2359837605.

The spelling of 65565872 in words is "sixty-five million, five hundred sixty-five thousand, eight hundred seventy-two".