167664667 has 2 divisors, whose sum is σ = 167664668. Its totient is φ = 167664666.

The previous prime is 167664593. The next prime is 167664677. The reversal of 167664667 is 766466761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 167664667 - 2²³ = 159276059 is a prime.

It is a super-2 number, since 2×167664667² = 56222881120441778, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 167664667.

It is not a weakly prime, because it can be changed into another prime (167664677) 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, 83832333 + 83832334.

It is an arithmetic number, because the mean of its divisors is an integer number (83832334).

Almost surely, 2^167664667 is an apocalyptic number.

167664667 is a deficient number, since it is larger than the sum of its proper divisors (1).

167664667 is an equidigital number, since it uses as much as digits as its factorization.

167664667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 49.

The square root of 167664667 is about 12948.5391840161. The cubic root of 167664667 is about 551.4174644222.

The spelling of 167664667 in words is "one hundred sixty-seven million, six hundred sixty-four thousand, six hundred sixty-seven".