69915313 has 4 divisors (see below), whose sum is σ = 75293428. Its totient is φ = 64537200.

The previous prime is 69915289. The next prime is 69915337. The reversal of 69915313 is 31351996.

69915313 = 5912² + 5913².

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

It is an interprime number because it is at equal distance from previous prime (69915289) and next prime (69915337).

It can be written as a sum of positive squares in 2 ways, for example, as 34951744 + 34963569 = 5912^2 + 5913^2 .

It is not a de Polignac number, because 69915313 - 2²¹ = 67818161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69915343) 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, 2689038 + ... + 2689063.

It is an arithmetic number, because the mean of its divisors is an integer number (18823357).

Almost surely, 2^69915313 is an apocalyptic number.

69915313 is the 5913-rd centered square number.

It is an amenable number.

69915313 is a deficient number, since it is larger than the sum of its proper divisors (5378115).

69915313 is a wasteful number, since it uses less digits than its factorization.

69915313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5378114.

The product of its digits is 21870, while the sum is 37.

The square root of 69915313 is about 8361.5377174297. The cubic root of 69915313 is about 411.9622632512.

The spelling of 69915313 in words is "sixty-nine million, nine hundred fifteen thousand, three hundred thirteen".