65916518 has 16 divisors (see below), whose sum is σ = 100539360. Its totient is φ = 32406336.

The previous prime is 65916517. The next prime is 65916523. The reversal of 65916518 is 81561956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65916517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73871 + ... + 74757.

It is an arithmetic number, because the mean of its divisors is an integer number (6283710).

Almost surely, 2^65916518 is an apocalyptic number.

65916518 is a deficient number, since it is larger than the sum of its proper divisors (34622842).

65916518 is a wasteful number, since it uses less digits than its factorization.

65916518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471.

The product of its digits is 64800, while the sum is 41.

The square root of 65916518 is about 8118.8988169579. The cubic root of 65916518 is about 403.9535408785.

The spelling of 65916518 in words is "sixty-five million, nine hundred sixteen thousand, five hundred eighteen".