67668023 has 2 divisors, whose sum is σ = 67668024. Its totient is φ = 67668022.

The previous prime is 67668011. The next prime is 67668031. The reversal of 67668023 is 32086676.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67668023 is a prime.

It is a super-2 number, since 2×67668023² = 9157922673457058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67668043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33834011 + 33834012.

It is an arithmetic number, because the mean of its divisors is an integer number (33834012).

Almost surely, 2^67668023 is an apocalyptic number.

67668023 is a deficient number, since it is larger than the sum of its proper divisors (1).

67668023 is an equidigital number, since it uses as much as digits as its factorization.

67668023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 67668023 is about 8226.0575611893. The cubic root of 67668023 is about 407.5002029934.

The spelling of 67668023 in words is "sixty-seven million, six hundred sixty-eight thousand, twenty-three".