166002817 has 2 divisors, whose sum is σ = 166002818. Its totient is φ = 166002816.

The previous prime is 166002797. The next prime is 166002821. The reversal of 166002817 is 718200661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106419856 + 59582961 = 10316^2 + 7719^2 .

It is a cyclic number.

It is not a de Polignac number, because 166002817 - 2¹⁹ = 165478529 is a prime.

It is not a weakly prime, because it can be changed into another prime (166002827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83001408 + 83001409.

It is an arithmetic number, because the mean of its divisors is an integer number (83001409).

Almost surely, 2^166002817 is an apocalyptic number.

It is an amenable number.

166002817 is a deficient number, since it is larger than the sum of its proper divisors (1).

166002817 is an equidigital number, since it uses as much as digits as its factorization.

166002817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 166002817 is about 12884.2080470629. The cubic root of 166002817 is about 549.5895747973.

The spelling of 166002817 in words is "one hundred sixty-six million, two thousand, eight hundred seventeen".