166565134 has 8 divisors (see below), whose sum is σ = 262997640. Its totient is φ = 78899256.

The previous prime is 166565123. The next prime is 166565137. The reversal of 166565134 is 431565661.

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

It is a junction number, because it is equal to n+sod(n) for n = 166565093 and 166565102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166565137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2191609 + ... + 2191684.

It is an arithmetic number, because the mean of its divisors is an integer number (32874705).

Almost surely, 2^166565134 is an apocalyptic number.

166565134 is a deficient number, since it is larger than the sum of its proper divisors (96432506).

166565134 is a wasteful number, since it uses less digits than its factorization.

166565134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4383314.

The product of its digits is 64800, while the sum is 37.

The square root of 166565134 is about 12906.0115450127. The cubic root of 166565134 is about 550.2094342891.

The spelling of 166565134 in words is "one hundred sixty-six million, five hundred sixty-five thousand, one hundred thirty-four".