68136797 has 2 divisors, whose sum is σ = 68136798. Its totient is φ = 68136796.

The previous prime is 68136773. The next prime is 68136823. The reversal of 68136797 is 79763186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68128516 + 8281 = 8254^2 + 91^2 .

It is a cyclic number.

It is not a de Polignac number, because 68136797 - 2¹⁰ = 68135773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68136197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34068398 + 34068399.

It is an arithmetic number, because the mean of its divisors is an integer number (34068399).

Almost surely, 2^68136797 is an apocalyptic number.

It is an amenable number.

68136797 is a deficient number, since it is larger than the sum of its proper divisors (1).

68136797 is an equidigital number, since it uses as much as digits as its factorization.

68136797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 68136797 is about 8254.5016203281. The cubic root of 68136797 is about 408.4390318440.

The spelling of 68136797 in words is "sixty-eight million, one hundred thirty-six thousand, seven hundred ninety-seven".