68808269 has 2 divisors, whose sum is σ = 68808270. Its totient is φ = 68808268.

The previous prime is 68808241. The next prime is 68808277. The reversal of 68808269 is 96280886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67732900 + 1075369 = 8230^2 + 1037^2 .

It is a cyclic number.

It is not a de Polignac number, because 68808269 - 2¹² = 68804173 is a prime.

It is a super-2 number, since 2×68808269² = 9469155765552722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68808239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34404134 + 34404135.

It is an arithmetic number, because the mean of its divisors is an integer number (34404135).

Almost surely, 2^68808269 is an apocalyptic number.

It is an amenable number.

68808269 is a deficient number, since it is larger than the sum of its proper divisors (1).

68808269 is an equidigital number, since it uses as much as digits as its factorization.

68808269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 68808269 is about 8295.0749845918. The cubic root of 68808269 is about 409.7763384515.

The spelling of 68808269 in words is "sixty-eight million, eight hundred eight thousand, two hundred sixty-nine".