206705212 has 24 divisors (see below), whose sum is σ = 413715456. Its totient is φ = 88522608.

The previous prime is 206705203. The next prime is 206705221. The reversal of 206705212 is 212507602.

It is an interprime number because it is at equal distance from previous prime (206705203) and next prime (206705221).

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, 69753 + ... + 72655.

It is an arithmetic number, because the mean of its divisors is an integer number (17238144).

Almost surely, 2^206705212 is an apocalyptic number.

It is an amenable number.

206705212 is an abundant number, since it is smaller than the sum of its proper divisors (207010244).

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

206705212 is a wasteful number, since it uses less digits than its factorization.

206705212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5457 (or 5455 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 206705212 is about 14377.2463288350. The cubic root of 206705212 is about 591.2672293161.

The spelling of 206705212 in words is "two hundred six million, seven hundred five thousand, two hundred twelve".