166673537 has 2 divisors, whose sum is σ = 166673538. Its totient is φ = 166673536.

The previous prime is 166673513. The next prime is 166673543. The reversal of 166673537 is 735376661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121528576 + 45144961 = 11024^2 + 6719^2 .

It is a cyclic number.

It is not a de Polignac number, because 166673537 - 2⁶ = 166673473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166673587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83336768 + 83336769.

It is an arithmetic number, because the mean of its divisors is an integer number (83336769).

Almost surely, 2^166673537 is an apocalyptic number.

It is an amenable number.

166673537 is a deficient number, since it is larger than the sum of its proper divisors (1).

166673537 is an equidigital number, since it uses as much as digits as its factorization.

166673537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 44.

The square root of 166673537 is about 12910.2105714818. The cubic root of 166673537 is about 550.3287698255.

The spelling of 166673537 in words is "one hundred sixty-six million, six hundred seventy-three thousand, five hundred thirty-seven".