68163331 has 2 divisors, whose sum is σ = 68163332. Its totient is φ = 68163330.

The previous prime is 68163307. The next prime is 68163343. The reversal of 68163331 is 13336186.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68163331 is a prime.

It is a super-2 number, since 2×68163331² = 9292479386031122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68163293 and 68163302.

It is not a weakly prime, because it can be changed into another prime (68163131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34081665 + 34081666.

It is an arithmetic number, because the mean of its divisors is an integer number (34081666).

Almost surely, 2^68163331 is an apocalyptic number.

68163331 is a deficient number, since it is larger than the sum of its proper divisors (1).

68163331 is an equidigital number, since it uses as much as digits as its factorization.

68163331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 68163331 is about 8256.1087081021. The cubic root of 68163331 is about 408.4920434093.

The spelling of 68163331 in words is "sixty-eight million, one hundred sixty-three thousand, three hundred thirty-one".