166560243 has 8 divisors (see below), whose sum is σ = 222169488. Its totient is φ = 110995584.

The previous prime is 166560223. The next prime is 166560257. The reversal of 166560243 is 342065661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166560243 - 2²⁴ = 149783027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166560223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1146 + ... + 18287.

It is an arithmetic number, because the mean of its divisors is an integer number (27771186).

Almost surely, 2^166560243 is an apocalyptic number.

166560243 is a deficient number, since it is larger than the sum of its proper divisors (55609245).

166560243 is a wasteful number, since it uses less digits than its factorization.

166560243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22293.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 166560243 is about 12905.8220582805. The cubic root of 166560243 is about 550.2040488069.

The spelling of 166560243 in words is "one hundred sixty-six million, five hundred sixty thousand, two hundred forty-three".