166204667 has 2 divisors, whose sum is σ = 166204668. Its totient is φ = 166204666.

The previous prime is 166204627. The next prime is 166204669. The reversal of 166204667 is 766402661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166204667 is a prime.

Together with 166204669, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166204667.

It is not a weakly prime, because it can be changed into another prime (166204669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83102333 + 83102334.

It is an arithmetic number, because the mean of its divisors is an integer number (83102334).

Almost surely, 2^166204667 is an apocalyptic number.

166204667 is a deficient number, since it is larger than the sum of its proper divisors (1).

166204667 is an equidigital number, since it uses as much as digits as its factorization.

166204667 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 166204667 is about 12892.0389000344. The cubic root of 166204667 is about 549.8122411444.

The spelling of 166204667 in words is "one hundred sixty-six million, two hundred four thousand, six hundred sixty-seven".