166423361 has 8 divisors (see below), whose sum is σ = 181750464. Its totient is φ = 151457040.

The previous prime is 166423357. The next prime is 166423379. The reversal of 166423361 is 163324661.

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

It is a cyclic number.

It is not a de Polignac number, because 166423361 - 2² = 166423357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166423391) 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, 89231 + ... + 91076.

It is an arithmetic number, because the mean of its divisors is an integer number (22718808).

Almost surely, 2^166423361 is an apocalyptic number.

It is an amenable number.

166423361 is a deficient number, since it is larger than the sum of its proper divisors (15327103).

166423361 is a wasteful number, since it uses less digits than its factorization.

166423361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180391.

The product of its digits is 15552, while the sum is 32.

The square root of 166423361 is about 12900.5178578226. The cubic root of 166423361 is about 550.0532851956.

The spelling of 166423361 in words is "one hundred sixty-six million, four hundred twenty-three thousand, three hundred sixty-one".