65995816 has 32 divisors (see below), whose sum is σ = 130680000. Its totient is φ = 31159296.

The previous prime is 65995747. The next prime is 65995837. The reversal of 65995816 is 61859956.

It is a self number, because there is not a number n which added to its sum of digits gives 65995816.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67765 + ... + 68731.

It is an arithmetic number, because the mean of its divisors is an integer number (4083750).

Almost surely, 2^65995816 is an apocalyptic number.

It is an amenable number.

65995816 is a deficient number, since it is larger than the sum of its proper divisors (64684184).

65995816 is a wasteful number, since it uses less digits than its factorization.

65995816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441 (or 1437 counting only the distinct ones).

The product of its digits is 583200, while the sum is 49.

The square root of 65995816 is about 8123.7808931556. The cubic root of 65995816 is about 404.1154622109.

The spelling of 65995816 in words is "sixty-five million, nine hundred ninety-five thousand, eight hundred sixteen".