67564163 has 2 divisors, whose sum is σ = 67564164. Its totient is φ = 67564162.

The previous prime is 67564157. The next prime is 67564177. The reversal of 67564163 is 36146576.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67564163 - 2²⁴ = 50786947 is a prime.

It is a super-2 number, since 2×67564163² = 9129832243781138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67564193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33782081 + 33782082.

It is an arithmetic number, because the mean of its divisors is an integer number (33782082).

Almost surely, 2^67564163 is an apocalyptic number.

67564163 is a deficient number, since it is larger than the sum of its proper divisors (1).

67564163 is an equidigital number, since it uses as much as digits as its factorization.

67564163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 67564163 is about 8219.7422708988. The cubic root of 67564163 is about 407.2916128757.

The spelling of 67564163 in words is "sixty-seven million, five hundred sixty-four thousand, one hundred sixty-three".