166322417 has 8 divisors (see below), whose sum is σ = 169269672. Its totient is φ = 163382400.

The previous prime is 166322411. The next prime is 166322449. The reversal of 166322417 is 714223661.

It can be written as a sum of positive squares in 4 ways, for example, as 28987456 + 137334961 = 5384^2 + 11719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166322417 - 2¹⁴ = 166306033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166322411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66917 + ... + 69357.

It is an arithmetic number, because the mean of its divisors is an integer number (21158709).

Almost surely, 2^166322417 is an apocalyptic number.

It is an amenable number.

166322417 is a deficient number, since it is larger than the sum of its proper divisors (2947255).

166322417 is a wasteful number, since it uses less digits than its factorization.

166322417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3619.

The product of its digits is 12096, while the sum is 32.

The square root of 166322417 is about 12896.6048632964. The cubic root of 166322417 is about 549.9420511949.

The spelling of 166322417 in words is "one hundred sixty-six million, three hundred twenty-two thousand, four hundred seventeen".