69868513 has 16 divisors (see below), whose sum is σ = 84736512. Its totient is φ = 56736000.

The previous prime is 69868439. The next prime is 69868517. The reversal of 69868513 is 31586896.

It is a cyclic number.

It is not a de Polignac number, because 69868513 - 2²⁵ = 36314081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69868517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3448 + ... + 12313.

It is an arithmetic number, because the mean of its divisors is an integer number (5296032).

Almost surely, 2^69868513 is an apocalyptic number.

It is an amenable number.

69868513 is a deficient number, since it is larger than the sum of its proper divisors (14867999).

69868513 is a wasteful number, since it uses less digits than its factorization.

69868513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15816.

The product of its digits is 311040, while the sum is 46.

The square root of 69868513 is about 8358.7387206444. The cubic root of 69868513 is about 411.8703227947.

The spelling of 69868513 in words is "sixty-nine million, eight hundred sixty-eight thousand, five hundred thirteen".