166672873 has 2 divisors, whose sum is σ = 166672874. Its totient is φ = 166672872.

The previous prime is 166672867. The next prime is 166672897. The reversal of 166672873 is 378276661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136235584 + 30437289 = 11672^2 + 5517^2 .

It is a cyclic number.

It is not a de Polignac number, because 166672873 - 2¹³ = 166664681 is a prime.

It is not a weakly prime, because it can be changed into another prime (166672823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83336436 + 83336437.

It is an arithmetic number, because the mean of its divisors is an integer number (83336437).

Almost surely, 2^166672873 is an apocalyptic number.

It is an amenable number.

166672873 is a deficient number, since it is larger than the sum of its proper divisors (1).

166672873 is an equidigital number, since it uses as much as digits as its factorization.

166672873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 166672873 is about 12910.1848553768. The cubic root of 166672873 is about 550.3280390180.

The spelling of 166672873 in words is "one hundred sixty-six million, six hundred seventy-two thousand, eight hundred seventy-three".