65380872 has 32 divisors (see below), whose sum is σ = 163658880. Its totient is φ = 21766080.

The previous prime is 65380849. The next prime is 65380897. The reversal of 65380872 is 27808356.

It is a self number, because there is not a number n which added to its sum of digits gives 65380872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28438 + ... + 30650.

It is an arithmetic number, because the mean of its divisors is an integer number (5114340).

Almost surely, 2^65380872 is an apocalyptic number.

It is an amenable number.

65380872 is an abundant number, since it is smaller than the sum of its proper divisors (98278008).

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

65380872 is a wasteful number, since it uses less digits than its factorization.

65380872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453 (or 3449 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 65380872 is about 8085.8439262702. The cubic root of 65380872 is about 402.8563709773.

The spelling of 65380872 in words is "sixty-five million, three hundred eighty thousand, eight hundred seventy-two".