68253569 has 2 divisors, whose sum is σ = 68253570. Its totient is φ = 68253568.

The previous prime is 68253557. The next prime is 68253583. The reversal of 68253569 is 96535286.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47886400 + 20367169 = 6920^2 + 4513^2 .

It is a cyclic number.

It is not a de Polignac number, because 68253569 - 2⁸ = 68253313 is a prime.

It is a super-2 number, since 2×68253569² = 9317099362475522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68253539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34126784 + 34126785.

It is an arithmetic number, because the mean of its divisors is an integer number (34126785).

Almost surely, 2^68253569 is an apocalyptic number.

It is an amenable number.

68253569 is a deficient number, since it is larger than the sum of its proper divisors (1).

68253569 is an equidigital number, since it uses as much as digits as its factorization.

68253569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 44.

The square root of 68253569 is about 8261.5718238117. The cubic root of 68253569 is about 408.6722246009.

The spelling of 68253569 in words is "sixty-eight million, two hundred fifty-three thousand, five hundred sixty-nine".