68399567 has 2 divisors, whose sum is σ = 68399568. Its totient is φ = 68399566.

The previous prime is 68399561. The next prime is 68399581. The reversal of 68399567 is 76599386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68399567 - 2⁶ = 68399503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68399561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34199783 + 34199784.

It is an arithmetic number, because the mean of its divisors is an integer number (34199784).

Almost surely, 2^68399567 is an apocalyptic number.

68399567 is a deficient number, since it is larger than the sum of its proper divisors (1).

68399567 is an equidigital number, since it uses as much as digits as its factorization.

68399567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 53.

The square root of 68399567 is about 8270.4030736113. The cubic root of 68399567 is about 408.9634075938.

The spelling of 68399567 in words is "sixty-eight million, three hundred ninety-nine thousand, five hundred sixty-seven".