166533423 has 16 divisors (see below), whose sum is σ = 267121920. Its totient is φ = 90153216.

The previous prime is 166533421. The next prime is 166533427. The reversal of 166533423 is 324335661.

It is not a de Polignac number, because 166533423 - 2¹ = 166533421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166533421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208290 + ... + 209087.

It is an arithmetic number, because the mean of its divisors is an integer number (16695120).

Almost surely, 2^166533423 is an apocalyptic number.

166533423 is a deficient number, since it is larger than the sum of its proper divisors (100588497).

166533423 is a wasteful number, since it uses less digits than its factorization.

166533423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417406.

The product of its digits is 38880, while the sum is 33.

The square root of 166533423 is about 12904.7829505188. The cubic root of 166533423 is about 550.1745154192.

The spelling of 166533423 in words is "one hundred sixty-six million, five hundred thirty-three thousand, four hundred twenty-three".