166674913 has 2 divisors, whose sum is σ = 166674914. Its totient is φ = 166674912.

The previous prime is 166674797. The next prime is 166674917. The reversal of 166674913 is 319476661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96668224 + 70006689 = 9832^2 + 8367^2 .

It is a cyclic number.

It is not a de Polignac number, because 166674913 - 2⁹ = 166674401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166674913.

It is not a weakly prime, because it can be changed into another prime (166674917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83337456 + 83337457.

It is an arithmetic number, because the mean of its divisors is an integer number (83337457).

Almost surely, 2^166674913 is an apocalyptic number.

It is an amenable number.

166674913 is a deficient number, since it is larger than the sum of its proper divisors (1).

166674913 is an equidigital number, since it uses as much as digits as its factorization.

166674913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 166674913 is about 12910.2638625243. The cubic root of 166674913 is about 550.3302842637.

The spelling of 166674913 in words is "one hundred sixty-six million, six hundred seventy-four thousand, nine hundred thirteen".