65112538 has 16 divisors (see below), whose sum is σ = 99797184. Its totient is φ = 31853920.

The previous prime is 65112491. The next prime is 65112539. The reversal of 65112538 is 83521156.

It is not an unprimeable number, because it can be changed into a prime (65112539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17781 + ... + 21127.

It is an arithmetic number, because the mean of its divisors is an integer number (6237324).

Almost surely, 2^65112538 is an apocalyptic number.

65112538 is a deficient number, since it is larger than the sum of its proper divisors (34684646).

65112538 is a wasteful number, since it uses less digits than its factorization.

65112538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3557.

The product of its digits is 7200, while the sum is 31.

The square root of 65112538 is about 8069.2340404774. The cubic root of 65112538 is about 402.3044853714.

The spelling of 65112538 in words is "sixty-five million, one hundred twelve thousand, five hundred thirty-eight".