166174461 has 6 divisors (see below), whose sum is σ = 240029790. Its totient is φ = 110782968.

The previous prime is 166174447. The next prime is 166174573. The reversal of 166174461 is 164471661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 121418361 + 44756100 = 11019^2 + 6690^2 .

It is not a de Polignac number, because 166174461 - 2⁵ = 166174429 is a prime.

It is a super-2 number, since 2×166174461² = 55227902977281042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166174441) 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, 9231906 + ... + 9231923.

It is an arithmetic number, because the mean of its divisors is an integer number (40004965).

Almost surely, 2^166174461 is an apocalyptic number.

It is an amenable number.

166174461 is a deficient number, since it is larger than the sum of its proper divisors (73855329).

166174461 is a wasteful number, since it uses less digits than its factorization.

166174461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18463835 (or 18463832 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 166174461 is about 12890.8673486310. The cubic root of 166174461 is about 549.7789315407.

The spelling of 166174461 in words is "one hundred sixty-six million, one hundred seventy-four thousand, four hundred sixty-one".