166667013 has 6 divisors (see below), whose sum is σ = 240741254. Its totient is φ = 111111336.

The previous prime is 166667003. The next prime is 166667021. The reversal of 166667013 is 310766661.

166667013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 88397604 + 78269409 = 9402^2 + 8847^2 .

It is not a de Polignac number, because 166667013 - 2⁶ = 166666949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166667003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9259270 + ... + 9259287.

Almost surely, 2^166667013 is an apocalyptic number.

It is an amenable number.

166667013 is a deficient number, since it is larger than the sum of its proper divisors (74074241).

166667013 is a wasteful number, since it uses less digits than its factorization.

166667013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18518563 (or 18518560 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 166667013 is about 12909.9579007834. The cubic root of 166667013 is about 550.3215893380.

The spelling of 166667013 in words is "one hundred sixty-six million, six hundred sixty-seven thousand, thirteen".