166201670 has 16 divisors (see below), whose sum is σ = 299579040. Its totient is φ = 66388224.

The previous prime is 166201631. The next prime is 166201681. The reversal of 166201670 is 76102661.

It is a super-2 number, since 2×166201670² = 55245990221577800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3755 + ... + 18614.

It is an arithmetic number, because the mean of its divisors is an integer number (18723690).

Almost surely, 2^166201670 is an apocalyptic number.

166201670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166201670 is a deficient number, since it is larger than the sum of its proper divisors (133377370).

166201670 is a wasteful number, since it uses less digits than its factorization.

166201670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23119.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 166201670 is about 12891.9226649868. The cubic root of 166201670 is about 549.8089363892.

Subtracting from 166201670 its reverse (76102661), we obtain a palindrome (90099009).

The spelling of 166201670 in words is "one hundred sixty-six million, two hundred one thousand, six hundred seventy".