69131997 has 48 divisors (see below), whose sum is σ = 115210368. Its totient is φ = 39536640.

The previous prime is 69131957. The next prime is 69132001. The reversal of 69131997 is 79913196.

It is not a de Polignac number, because 69131997 - 2¹² = 69127901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69131927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 220713 + ... + 221025.

It is an arithmetic number, because the mean of its divisors is an integer number (2400216).

Almost surely, 2^69131997 is an apocalyptic number.

It is an amenable number.

69131997 is a deficient number, since it is larger than the sum of its proper divisors (46078371).

69131997 is a wasteful number, since it uses less digits than its factorization.

69131997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 447 counting only the distinct ones).

The product of its digits is 91854, while the sum is 45.

The square root of 69131997 is about 8314.5653524403. The cubic root of 69131997 is about 410.4179695573.

The spelling of 69131997 in words is "sixty-nine million, one hundred thirty-one thousand, nine hundred ninety-seven".