69806913 has 16 divisors (see below), whose sum is σ = 107510976. Its totient is φ = 39818240.

The previous prime is 69806903. The next prime is 69806917. The reversal of 69806913 is 31960896.

It is not a de Polignac number, because 69806913 - 2²⁰ = 68758337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69806917) 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, 61656 + ... + 62777.

It is an arithmetic number, because the mean of its divisors is an integer number (6719436).

Almost surely, 2^69806913 is an apocalyptic number.

It is an amenable number.

69806913 is a deficient number, since it is larger than the sum of its proper divisors (37704063).

69806913 is a wasteful number, since it uses less digits than its factorization.

69806913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124464.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 69806913 is about 8355.0531416622. The cubic root of 69806913 is about 411.7492445451.

The spelling of 69806913 in words is "sixty-nine million, eight hundred six thousand, nine hundred thirteen".