166227165 has 24 divisors (see below), whose sum is σ = 310291800. Its totient is φ = 81834624.

The previous prime is 166227163. The next prime is 166227167. The reversal of 166227165 is 561722661.

It is a happy number.

166227165 is a `hidden beast` number, since 16 + 622 + 7 + 16 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (166227163) and next prime (166227167).

It can be written as a sum of positive squares in 4 ways, for example, as 26656569 + 139570596 = 5163^2 + 11814^2 .

It is not a de Polignac number, because 166227165 - 2¹ = 166227163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166227163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141490 + ... + 142659.

It is an arithmetic number, because the mean of its divisors is an integer number (12928825).

Almost surely, 2^166227165 is an apocalyptic number.

166227165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166227165 is a deficient number, since it is larger than the sum of its proper divisors (144064635).

166227165 is a wasteful number, since it uses less digits than its factorization.

166227165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284173 (or 284170 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 166227165 is about 12892.9114244999. The cubic root of 166227165 is about 549.8370481448.

The spelling of 166227165 in words is "one hundred sixty-six million, two hundred twenty-seven thousand, one hundred sixty-five".