166095689 has 4 divisors (see below), whose sum is σ = 166298820. Its totient is φ = 165892560.

The previous prime is 166095667. The next prime is 166095691. The reversal of 166095689 is 986590661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 109725625 + 56370064 = 10475^2 + 7508^2 .

It is a cyclic number.

It is not a de Polignac number, because 166095689 - 2¹⁶ = 166030153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166095889) 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, 100334 + ... + 101975.

It is an arithmetic number, because the mean of its divisors is an integer number (41574705).

Almost surely, 2^166095689 is an apocalyptic number.

It is an amenable number.

166095689 is a deficient number, since it is larger than the sum of its proper divisors (203131).

166095689 is an equidigital number, since it uses as much as digits as its factorization.

166095689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203130.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 166095689 is about 12887.8116451165. The cubic root of 166095689 is about 549.6920468884.

The spelling of 166095689 in words is "one hundred sixty-six million, ninety-five thousand, six hundred eighty-nine".