166272243 has 8 divisors (see below), whose sum is σ = 221792256. Its totient is φ = 110800200.

The previous prime is 166272241. The next prime is 166272299. The reversal of 166272243 is 342272661.

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

It is not a de Polignac number, because 166272243 - 2¹ = 166272241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166272241) 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, 2923 + ... + 18468.

It is an arithmetic number, because the mean of its divisors is an integer number (27724032).

Almost surely, 2^166272243 is an apocalyptic number.

166272243 is a deficient number, since it is larger than the sum of its proper divisors (55520013).

166272243 is a wasteful number, since it uses less digits than its factorization.

166272243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23985.

The product of its digits is 24192, while the sum is 33.

The square root of 166272243 is about 12894.6594759226. The cubic root of 166272243 is about 549.8867458267.

The spelling of 166272243 in words is "one hundred sixty-six million, two hundred seventy-two thousand, two hundred forty-three".