69317257 has 2 divisors, whose sum is σ = 69317258. Its totient is φ = 69317256.

The previous prime is 69317231. The next prime is 69317273. The reversal of 69317257 is 75271396.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37100281 + 32216976 = 6091^2 + 5676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69317257 is a prime.

It is not a weakly prime, because it can be changed into another prime (69317357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34658628 + 34658629.

It is an arithmetic number, because the mean of its divisors is an integer number (34658629).

Almost surely, 2^69317257 is an apocalyptic number.

It is an amenable number.

69317257 is a deficient number, since it is larger than the sum of its proper divisors (1).

69317257 is an equidigital number, since it uses as much as digits as its factorization.

69317257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 40.

The square root of 69317257 is about 8325.6985893077. The cubic root of 69317257 is about 410.7842553998.

The spelling of 69317257 in words is "sixty-nine million, three hundred seventeen thousand, two hundred fifty-seven".