166750361 has 2 divisors, whose sum is σ = 166750362. Its totient is φ = 166750360.

The previous prime is 166750307. The next prime is 166750369. The reversal of 166750361 is 163057661.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89661961 + 77088400 = 9469^2 + 8780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166750361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166750369) 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, 83375180 + 83375181.

It is an arithmetic number, because the mean of its divisors is an integer number (83375181).

Almost surely, 2^166750361 is an apocalyptic number.

It is an amenable number.

166750361 is a deficient number, since it is larger than the sum of its proper divisors (1).

166750361 is an equidigital number, since it uses as much as digits as its factorization.

166750361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 166750361 is about 12913.1855481132. The cubic root of 166750361 is about 550.4133102672.

The spelling of 166750361 in words is "one hundred sixty-six million, seven hundred fifty thousand, three hundred sixty-one".