65791013 has 4 divisors (see below), whose sum is σ = 66078540. Its totient is φ = 65503488.

The previous prime is 65791009. The next prime is 65791039. The reversal of 65791013 is 31019756.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64609444 + 1181569 = 8038^2 + 1087^2 .

It is a cyclic number.

It is not a de Polignac number, because 65791013 - 2² = 65791009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65791043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143420 + ... + 143877.

It is an arithmetic number, because the mean of its divisors is an integer number (16519635).

Almost surely, 2^65791013 is an apocalyptic number.

It is an amenable number.

65791013 is a deficient number, since it is larger than the sum of its proper divisors (287527).

65791013 is a wasteful number, since it uses less digits than its factorization.

65791013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287526.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 65791013 is about 8111.1659457812. The cubic root of 65791013 is about 403.6970022485.

The spelling of 65791013 in words is "sixty-five million, seven hundred ninety-one thousand, thirteen".