65775872 has 36 divisors (see below), whose sum is σ = 138215280. Its totient is φ = 31154688.

The previous prime is 65775869. The next prime is 65775881. The reversal of 65775872 is 27857756.

It is a happy 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, 1898 + ... + 11625.

Almost surely, 2^65775872 is an apocalyptic number.

It is an amenable number.

65775872 is an abundant number, since it is smaller than the sum of its proper divisors (72439408).

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

65775872 is a wasteful number, since it uses less digits than its factorization.

65775872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13558 (or 13544 counting only the distinct ones).

The product of its digits is 823200, while the sum is 47.

The square root of 65775872 is about 8110.2325490703. The cubic root of 65775872 is about 403.6660312238. Note that the first 3 decimals are identical.

The spelling of 65775872 in words is "sixty-five million, seven hundred seventy-five thousand, eight hundred seventy-two".