166710949 has 2 divisors, whose sum is σ = 166710950. Its totient is φ = 166710948.

The previous prime is 166710919. The next prime is 166710953. The reversal of 166710949 is 949017661.

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., 166668100 + 42849 = 12910^2 + 207^2 .

It is a cyclic number.

It is not a de Polignac number, because 166710949 - 2⁹ = 166710437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166710919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83355474 + 83355475.

It is an arithmetic number, because the mean of its divisors is an integer number (83355475).

Almost surely, 2^166710949 is an apocalyptic number.

It is an amenable number.

166710949 is a deficient number, since it is larger than the sum of its proper divisors (1).

166710949 is an equidigital number, since it uses as much as digits as its factorization.

166710949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 166710949 is about 12911.6594208490. The cubic root of 166710949 is about 550.3699428475.

The spelling of 166710949 in words is "one hundred sixty-six million, seven hundred ten thousand, nine hundred forty-nine".