166701697 has 2 divisors, whose sum is σ = 166701698. Its totient is φ = 166701696.

The previous prime is 166701683. The next prime is 166701707. The reversal of 166701697 is 796107661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110691441 + 56010256 = 10521^2 + 7484^2 .

It is a cyclic number.

It is not a de Polignac number, because 166701697 - 2⁷ = 166701569 is a prime.

It is not a weakly prime, because it can be changed into another prime (166701617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83350848 + 83350849.

It is an arithmetic number, because the mean of its divisors is an integer number (83350849).

Almost surely, 2^166701697 is an apocalyptic number.

It is an amenable number.

166701697 is a deficient number, since it is larger than the sum of its proper divisors (1).

166701697 is an equidigital number, since it uses as much as digits as its factorization.

166701697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 166701697 is about 12911.3011350522. The cubic root of 166701697 is about 550.3597613189.

The spelling of 166701697 in words is "one hundred sixty-six million, seven hundred one thousand, six hundred ninety-seven".