69939816 has 16 divisors (see below), whose sum is σ = 174849600. Its totient is φ = 23313264.

The previous prime is 69939799. The next prime is 69939823. The reversal of 69939816 is 61893996.

It is a super-2 number, since 2×69939816² = 9783155724227712, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1457056 + ... + 1457103.

It is an arithmetic number, because the mean of its divisors is an integer number (10928100).

Almost surely, 2^69939816 is an apocalyptic number.

It is an amenable number.

69939816 is an abundant number, since it is smaller than the sum of its proper divisors (104909784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69939816 is a wasteful number, since it uses less digits than its factorization.

69939816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2914168 (or 2914164 counting only the distinct ones).

The product of its digits is 629856, while the sum is 51.

The square root of 69939816 is about 8363.0028099959. The cubic root of 69939816 is about 412.0103840032.

The spelling of 69939816 in words is "sixty-nine million, nine hundred thirty-nine thousand, eight hundred sixteen".