166674813 has 16 divisors (see below), whose sum is σ = 233127936. Its totient is φ = 105720560.

The previous prime is 166674797. The next prime is 166674913. The reversal of 166674813 is 318476661.

It is a cyclic number.

It is not a de Polignac number, because 166674813 - 2⁴ = 166674797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166674713) 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 in 15 ways as a sum of consecutive naturals, for example, 6856 + ... + 19502.

It is an arithmetic number, because the mean of its divisors is an integer number (14570496).

Almost surely, 2^166674813 is an apocalyptic number.

It is an amenable number.

166674813 is a deficient number, since it is larger than the sum of its proper divisors (66453123).

166674813 is a wasteful number, since it uses less digits than its factorization.

166674813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12864.

The product of its digits is 145152, while the sum is 42.

The square root of 166674813 is about 12910.2599896361. The cubic root of 166674813 is about 550.3301742030.

The spelling of 166674813 in words is "one hundred sixty-six million, six hundred seventy-four thousand, eight hundred thirteen".