69131969 has 8 divisors (see below), whose sum is σ = 71694720. Its totient is φ = 66581200.

The previous prime is 69131957. The next prime is 69132001. The reversal of 69131969 is 96913196.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69131969 is a prime.

It is a super-2 number, since 2×69131969² = 9558458275633922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69131939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9734 + ... + 15264.

It is an arithmetic number, because the mean of its divisors is an integer number (8961840).

Almost surely, 2^69131969 is an apocalyptic number.

It is an amenable number.

69131969 is a deficient number, since it is larger than the sum of its proper divisors (2562751).

69131969 is a wasteful number, since it uses less digits than its factorization.

69131969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5991.

The product of its digits is 78732, while the sum is 44.

The square root of 69131969 is about 8314.5636686479. The cubic root of 69131969 is about 410.4179141479.

The spelling of 69131969 in words is "sixty-nine million, one hundred thirty-one thousand, nine hundred sixty-nine".