166226737 has 2 divisors, whose sum is σ = 166226738. Its totient is φ = 166226736.

The previous prime is 166226717. The next prime is 166226741. The reversal of 166226737 is 737622661.

166226737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96353856 + 69872881 = 9816^2 + 8359^2 .

It is a cyclic number.

It is not a de Polignac number, because 166226737 - 2²⁷ = 32009009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166226737.

It is not a weakly prime, because it can be changed into another prime (166226707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83113368 + 83113369.

It is an arithmetic number, because the mean of its divisors is an integer number (83113369).

Almost surely, 2^166226737 is an apocalyptic number.

It is an amenable number.

166226737 is a deficient number, since it is larger than the sum of its proper divisors (1).

166226737 is an equidigital number, since it uses as much as digits as its factorization.

166226737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 40.

The square root of 166226737 is about 12892.8948262211. The cubic root of 166226737 is about 549.8365762394.

The spelling of 166226737 in words is "one hundred sixty-six million, two hundred twenty-six thousand, seven hundred thirty-seven".