68822431 has 2 divisors, whose sum is σ = 68822432. Its totient is φ = 68822430.

The previous prime is 68822407. The next prime is 68822447. The reversal of 68822431 is 13422886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68822431 - 2²³ = 60433823 is a prime.

It is a super-2 number, since 2×68822431² = 9473054017499522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68822401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34411215 + 34411216.

It is an arithmetic number, because the mean of its divisors is an integer number (34411216).

Almost surely, 2^68822431 is an apocalyptic number.

68822431 is a deficient number, since it is larger than the sum of its proper divisors (1).

68822431 is an equidigital number, since it uses as much as digits as its factorization.

68822431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The square root of 68822431 is about 8295.9285797311. The cubic root of 68822431 is about 409.8044496775.

The spelling of 68822431 in words is "sixty-eight million, eight hundred twenty-two thousand, four hundred thirty-one".