166573417 has 4 divisors (see below), whose sum is σ = 167207040. Its totient is φ = 165939796.

The previous prime is 166573411. The next prime is 166573439. The reversal of 166573417 is 714375661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 714375661 = 19 ⋅37598719.

It is a cyclic number.

It is not a de Polignac number, because 166573417 - 2⁷ = 166573289 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166573417.

It is not an unprimeable number, because it can be changed into a prime (166573411) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 316417 + ... + 316942.

It is an arithmetic number, because the mean of its divisors is an integer number (41801760).

Almost surely, 2^166573417 is an apocalyptic number.

It is an amenable number.

166573417 is a deficient number, since it is larger than the sum of its proper divisors (633623).

166573417 is an equidigital number, since it uses as much as digits as its factorization.

166573417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633622.

The product of its digits is 105840, while the sum is 40.

The square root of 166573417 is about 12906.3324379934. The cubic root of 166573417 is about 550.2185544634.

The spelling of 166573417 in words is "one hundred sixty-six million, five hundred seventy-three thousand, four hundred seventeen".