65265913 has 4 divisors (see below), whose sum is σ = 66335908. Its totient is φ = 64195920.

The previous prime is 65265911. The next prime is 65265919. The reversal of 65265913 is 31956256.

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 7551504 + 57714409 = 2748^2 + 7597^2 .

It is a cyclic number.

It is not a de Polignac number, because 65265913 - 2¹ = 65265911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65265911) 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, 534906 + ... + 535027.

It is an arithmetic number, because the mean of its divisors is an integer number (16583977).

Almost surely, 2^65265913 is an apocalyptic number.

It is an amenable number.

65265913 is a deficient number, since it is larger than the sum of its proper divisors (1069995).

65265913 is a wasteful number, since it uses less digits than its factorization.

65265913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069994.

The product of its digits is 48600, while the sum is 37.

The square root of 65265913 is about 8078.7321406270. The cubic root of 65265913 is about 402.6201187214.

The spelling of 65265913 in words is "sixty-five million, two hundred sixty-five thousand, nine hundred thirteen".