65118457 has 4 divisors (see below), whose sum is σ = 65324196. Its totient is φ = 64912720.

The previous prime is 65118433. The next prime is 65118467. The reversal of 65118457 is 75481156.

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 27920656 + 37197801 = 5284^2 + 6099^2 .

It is a cyclic number.

It is not a de Polignac number, because 65118457 - 2¹⁵ = 65085689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65118407) 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, 102394 + ... + 103027.

It is an arithmetic number, because the mean of its divisors is an integer number (16331049).

Almost surely, 2^65118457 is an apocalyptic number.

It is an amenable number.

65118457 is a deficient number, since it is larger than the sum of its proper divisors (205739).

65118457 is a wasteful number, since it uses less digits than its factorization.

65118457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205738.

The product of its digits is 33600, while the sum is 37.

The square root of 65118457 is about 8069.6007955784. The cubic root of 65118457 is about 402.3166753847.

The spelling of 65118457 in words is "sixty-five million, one hundred eighteen thousand, four hundred fifty-seven".