206476213 has 4 divisors (see below), whose sum is σ = 213136768. Its totient is φ = 199815660.

The previous prime is 206476189. The next prime is 206476229. The reversal of 206476213 is 312674602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206476213 - 2¹³ = 206468021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 6660523 = 206476213 / (2 + 0 + 6 + 4 + 7 + 6 + 2 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206476273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3330231 + ... + 3330292.

It is an arithmetic number, because the mean of its divisors is an integer number (53284192).

Almost surely, 2^206476213 is an apocalyptic number.

It is an amenable number.

206476213 is a deficient number, since it is larger than the sum of its proper divisors (6660555).

206476213 is an equidigital number, since it uses as much as digits as its factorization.

206476213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6660554.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 206476213 is about 14369.2801837810. The cubic root of 206476213 is about 591.0488028999.

The spelling of 206476213 in words is "two hundred six million, four hundred seventy-six thousand, two hundred thirteen".