166447074 has 16 divisors (see below), whose sum is σ = 333321408. Its totient is φ = 55411152.

The previous prime is 166447031. The next prime is 166447093. The reversal of 166447074 is 470744661.

It is a happy number.

It is a super-2 number, since 2×166447074² = 55409256886322952, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12622 + ... + 22185.

It is an arithmetic number, because the mean of its divisors is an integer number (20832588).

Almost surely, 2^166447074 is an apocalyptic number.

166447074 is an abundant number, since it is smaller than the sum of its proper divisors (166874334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166447074 is a wasteful number, since it uses less digits than its factorization.

166447074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35609.

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 166447074 is about 12901.4368967181. The cubic root of 166447074 is about 550.0794089201.

The spelling of 166447074 in words is "one hundred sixty-six million, four hundred forty-seven thousand, seventy-four".