213166 has 8 divisors (see below), whose sum is σ = 325944. Its totient is φ = 104520.

The previous prime is 213149. The next prime is 213173. The reversal of 213166 is 661312.

213166 is nontrivially palindromic in base 12.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900 + ... + 1111.

It is an arithmetic number, because the mean of its divisors is an integer number (40743).

2²¹³¹⁶⁶ is an apocalyptic number.

213166 is a deficient number, since it is larger than the sum of its proper divisors (112778).

213166 is a wasteful number, since it uses less digits than its factorization.

213166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066.

The product of its digits is 216, while the sum is 19.

The square root of 213166 is about 461.6990361697. The cubic root of 213166 is about 59.7364365261.

Adding to 213166 its reverse (661312), we get a palindrome (874478).

It can be divided in two parts, 2131 and 66, that added together give a cube (2197 = 13³).

The spelling of 213166 in words is "two hundred thirteen thousand, one hundred sixty-six".