166097593 has 4 divisors (see below), whose sum is σ = 166823140. Its totient is φ = 165372048.

The previous prime is 166097549. The next prime is 166097609. The reversal of 166097593 is 395790661.

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 116704809 + 49392784 = 10803^2 + 7028^2 .

It is a cyclic number.

It is not a de Polignac number, because 166097593 - 2⁹ = 166097081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166007593) 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, 362430 + ... + 362887.

It is an arithmetic number, because the mean of its divisors is an integer number (41705785).

Almost surely, 2^166097593 is an apocalyptic number.

It is an amenable number.

166097593 is a deficient number, since it is larger than the sum of its proper divisors (725547).

166097593 is an equidigital number, since it uses as much as digits as its factorization.

166097593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725546.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 166097593 is about 12887.8855131476. The cubic root of 166097593 is about 549.6941473035.

The spelling of 166097593 in words is "one hundred sixty-six million, ninety-seven thousand, five hundred ninety-three".