69991368 has 16 divisors (see below), whose sum is σ = 174978480. Its totient is φ = 23330448.

The previous prime is 69991367. The next prime is 69991373. The reversal of 69991368 is 86319996.

It is a super-2 number, since 2×69991368² = 9797583189022848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 69991368.

It is not an unprimeable number, because it can be changed into a prime (69991367) 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, 1458130 + ... + 1458177.

It is an arithmetic number, because the mean of its divisors is an integer number (10936155).

Almost surely, 2^69991368 is an apocalyptic number.

It is an amenable number.

69991368 is an abundant number, since it is smaller than the sum of its proper divisors (104987112).

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

69991368 is a wasteful number, since it uses less digits than its factorization.

69991368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916316 (or 2916312 counting only the distinct ones).

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

The square root of 69991368 is about 8366.0843887687. The cubic root of 69991368 is about 412.1115888394. Note that the first 3 decimals are identical.

The spelling of 69991368 in words is "sixty-nine million, nine hundred ninety-one thousand, three hundred sixty-eight".