206877213 has 16 divisors (see below), whose sum is σ = 317054400. Its totient is φ = 133161840.

The previous prime is 206877161. The next prime is 206877239. The reversal of 206877213 is 312778602.

It is not a de Polignac number, because 206877213 - 2¹³ = 206869021 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206877283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131323 + ... + 132888.

It is an arithmetic number, because the mean of its divisors is an integer number (19815900).

Almost surely, 2^206877213 is an apocalyptic number.

It is an amenable number.

206877213 is a deficient number, since it is larger than the sum of its proper divisors (110177187).

206877213 is a wasteful number, since it uses less digits than its factorization.

206877213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264249 (or 264243 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 206877213 is about 14383.2267937344. The cubic root of 206877213 is about 591.4311831883.

The spelling of 206877213 in words is "two hundred six million, eight hundred seventy-seven thousand, two hundred thirteen".