166162623 has 16 divisors (see below), whose sum is σ = 242478336. Its totient is φ = 100376640.

The previous prime is 166162589. The next prime is 166162639. The reversal of 166162623 is 326261661.

It is not a de Polignac number, because 166162623 - 2¹⁰ = 166161599 is a prime.

It is a super-2 number, since 2×166162623² = 55220034564480258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166162643) 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, 2286 + ... + 18372.

It is an arithmetic number, because the mean of its divisors is an integer number (15154896).

Almost surely, 2^166162623 is an apocalyptic number.

166162623 is a deficient number, since it is larger than the sum of its proper divisors (76315713).

166162623 is a wasteful number, since it uses less digits than its factorization.

166162623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16414.

The product of its digits is 15552, while the sum is 33.

The square root of 166162623 is about 12890.4081781765. The cubic root of 166162623 is about 549.7658761099.

The spelling of 166162623 in words is "one hundred sixty-six million, one hundred sixty-two thousand, six hundred twenty-three".