69927813 has 16 divisors (see below), whose sum is σ = 103893760. Its totient is φ = 46484928.

The previous prime is 69927791. The next prime is 69927821. The reversal of 69927813 is 31872996.

It is not a de Polignac number, because 69927813 - 2⁹ = 69927301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69927853) 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, 6381 + ... + 13437.

It is an arithmetic number, because the mean of its divisors is an integer number (6493360).

Almost surely, 2^69927813 is an apocalyptic number.

It is an amenable number.

69927813 is a deficient number, since it is larger than the sum of its proper divisors (33965947).

69927813 is a wasteful number, since it uses less digits than its factorization.

69927813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7433 (or 7427 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 69927813 is about 8362.2851541908. The cubic root of 69927813 is about 411.9868130539.

The spelling of 69927813 in words is "sixty-nine million, nine hundred twenty-seven thousand, eight hundred thirteen".