212662206 has 32 divisors (see below), whose sum is σ = 473875200. Its totient is φ = 70693560.

The previous prime is 212662189. The next prime is 212662217. The reversal of 212662206 is 602266212.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212662206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15271 + ... + 25661.

It is an arithmetic number, because the mean of its divisors is an integer number (14808600).

Almost surely, 2^212662206 is an apocalyptic number.

212662206 is an abundant number, since it is smaller than the sum of its proper divisors (261212994).

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

212662206 is a wasteful number, since it uses less digits than its factorization.

212662206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10781 (or 10775 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 212662206 is about 14582.9422957097. The cubic root of 212662206 is about 596.8933927466.

The spelling of 212662206 in words is "two hundred twelve million, six hundred sixty-two thousand, two hundred six".