65312065 has 48 divisors (see below), whose sum is σ = 101945088. Its totient is φ = 39042432.

The previous prime is 65312053. The next prime is 65312077. The reversal of 65312065 is 56021356.

It is an interprime number because it is at equal distance from previous prime (65312053) and next prime (65312077).

It is not a de Polignac number, because 65312065 - 2⁵ = 65312033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 826696 + ... + 826774.

It is an arithmetic number, because the mean of its divisors is an integer number (2123856).

Almost surely, 2^65312065 is an apocalyptic number.

65312065 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65312065 is a deficient number, since it is larger than the sum of its proper divisors (36633023).

65312065 is a wasteful number, since it uses less digits than its factorization.

65312065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 65312065 is about 8081.5880246397. The cubic root of 65312065 is about 402.7149990075.

The spelling of 65312065 in words is "sixty-five million, three hundred twelve thousand, sixty-five".