166737073 has 2 divisors, whose sum is σ = 166737074. Its totient is φ = 166737072.

The previous prime is 166737047. The next prime is 166737089. The reversal of 166737073 is 370737661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145733184 + 21003889 = 12072^2 + 4583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166737073 is a prime.

It is not a weakly prime, because it can be changed into another prime (166737023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83368536 + 83368537.

It is an arithmetic number, because the mean of its divisors is an integer number (83368537).

Almost surely, 2^166737073 is an apocalyptic number.

It is an amenable number.

166737073 is a deficient number, since it is larger than the sum of its proper divisors (1).

166737073 is an equidigital number, since it uses as much as digits as its factorization.

166737073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111132, while the sum is 40.

The square root of 166737073 is about 12912.6710250049. The cubic root of 166737073 is about 550.3986894366.

The spelling of 166737073 in words is "one hundred sixty-six million, seven hundred thirty-seven thousand, seventy-three".