69997091 has 2 divisors, whose sum is σ = 69997092. Its totient is φ = 69997090.

The previous prime is 69997079. The next prime is 69997093. The reversal of 69997091 is 19079996.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69997091 - 2²² = 65802787 is a prime.

Together with 69997093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (69997093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34998545 + 34998546.

It is an arithmetic number, because the mean of its divisors is an integer number (34998546).

Almost surely, 2^69997091 is an apocalyptic number.

69997091 is a deficient number, since it is larger than the sum of its proper divisors (1).

69997091 is an equidigital number, since it uses as much as digits as its factorization.

69997091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 275562, while the sum is 50.

The square root of 69997091 is about 8366.4264175334. The cubic root of 69997091 is about 412.1228209404.

The spelling of 69997091 in words is "sixty-nine million, nine hundred ninety-seven thousand, ninety-one".