166166713 has 4 divisors (see below), whose sum is σ = 169301988. Its totient is φ = 163031440.

The previous prime is 166166711. The next prime is 166166717. The reversal of 166166713 is 317661661.

166166713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 317661661 = 277 ⋅1146793.

It can be written as a sum of positive squares in 2 ways, for example, as 102677689 + 63489024 = 10133^2 + 7968^2 .

It is a cyclic number.

It is not a de Polignac number, because 166166713 - 2¹ = 166166711 is a prime.

It is a super-2 number, since 2×166166713² = 55222753018448738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166166711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1567558 + ... + 1567663.

It is an arithmetic number, because the mean of its divisors is an integer number (42325497).

Almost surely, 2^166166713 is an apocalyptic number.

It is an amenable number.

166166713 is a deficient number, since it is larger than the sum of its proper divisors (3135275).

166166713 is an equidigital number, since it uses as much as digits as its factorization.

166166713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135274.

The product of its digits is 27216, while the sum is 37.

The square root of 166166713 is about 12890.5668222930. The cubic root of 166166713 is about 549.7703867994.

The spelling of 166166713 in words is "one hundred sixty-six million, one hundred sixty-six thousand, seven hundred thirteen".