68090807 has 2 divisors, whose sum is σ = 68090808. Its totient is φ = 68090806.

The previous prime is 68090783. The next prime is 68090809. The reversal of 68090807 is 70809086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68090807 - 2¹⁴ = 68074423 is a prime.

It is a super-2 number, since 2×68090807² = 9272715995822498, which contains 22 as substring.

Together with 68090809, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68090809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34045403 + 34045404.

It is an arithmetic number, because the mean of its divisors is an integer number (34045404).

Almost surely, 2^68090807 is an apocalyptic number.

68090807 is a deficient number, since it is larger than the sum of its proper divisors (1).

68090807 is an equidigital number, since it uses as much as digits as its factorization.

68090807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 68090807 is about 8251.7153974189. The cubic root of 68090807 is about 408.3471170506.

The spelling of 68090807 in words is "sixty-eight million, ninety thousand, eight hundred seven".