69000091 has 2 divisors, whose sum is σ = 69000092. Its totient is φ = 69000090.

The previous prime is 69000067. The next prime is 69000097. The reversal of 69000091 is 19000096.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69000091 - 2¹¹ = 68998043 is a prime.

It is a super-2 number, since 2×69000091² = 9522025116016562, which contains 22 as substring.

69000091 is a modest number, since divided by 91 gives 69 as remainder.

It is not a weakly prime, because it can be changed into another prime (69000097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34500045 + 34500046.

It is an arithmetic number, because the mean of its divisors is an integer number (34500046).

Almost surely, 2^69000091 is an apocalyptic number.

69000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

69000091 is an equidigital number, since it uses as much as digits as its factorization.

69000091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 69000091 is about 8306.6293404726. The cubic root of 69000091 is about 410.1567732805.

The spelling of 69000091 in words is "sixty-nine million, ninety-one", and thus it is an aban number and an uban number.