166683697 has 4 divisors (see below), whose sum is σ = 166718320. Its totient is φ = 166649076.

The previous prime is 166683679. The next prime is 166683703. The reversal of 166683697 is 796386661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166683697 - 2²³ = 158295089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166683607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8643 + ... + 20200.

It is an arithmetic number, because the mean of its divisors is an integer number (41679580).

Almost surely, 2^166683697 is an apocalyptic number.

It is an amenable number.

166683697 is a deficient number, since it is larger than the sum of its proper divisors (34623).

166683697 is an equidigital number, since it uses as much as digits as its factorization.

166683697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34622.

The product of its digits is 1959552, while the sum is 52.

The square root of 166683697 is about 12910.6040524834. The cubic root of 166683697 is about 550.3399518179.

The spelling of 166683697 in words is "one hundred sixty-six million, six hundred eighty-three thousand, six hundred ninety-seven".