213166206 has 48 divisors (see below), whose sum is σ = 530375040. Its totient is φ = 61194960.

The previous prime is 213166189. The next prime is 213166207. The reversal of 213166206 is 602661312.

213166206 is a `hidden beast` number, since 2 + 1 + 31 + 6 + 620 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 213166206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213166207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24570 + ... + 32093.

It is an arithmetic number, because the mean of its divisors is an integer number (11049480).

Almost surely, 2^213166206 is an apocalyptic number.

213166206 is an abundant number, since it is smaller than the sum of its proper divisors (317208834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213166206 is a wasteful number, since it uses less digits than its factorization.

213166206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56701 (or 56698 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 213166206 is about 14600.2125326997. The cubic root of 213166206 is about 597.3645576884.

The spelling of 213166206 in words is "two hundred thirteen million, one hundred sixty-six thousand, two hundred six".