166788967 has 2 divisors, whose sum is σ = 166788968. Its totient is φ = 166788966.

The previous prime is 166788953. The next prime is 166788983. The reversal of 166788967 is 769887661.

It is a weak prime.

It is an emirp because it is prime and its reverse (769887661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166788967 - 2¹⁵ = 166756199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166788907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83394483 + 83394484.

It is an arithmetic number, because the mean of its divisors is an integer number (83394484).

Almost surely, 2^166788967 is an apocalyptic number.

166788967 is a deficient number, since it is larger than the sum of its proper divisors (1).

166788967 is an equidigital number, since it uses as much as digits as its factorization.

166788967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 58.

The square root of 166788967 is about 12914.6802902743. The cubic root of 166788967 is about 550.4557841715.

The spelling of 166788967 in words is "one hundred sixty-six million, seven hundred eighty-eight thousand, nine hundred sixty-seven".