206879057 has 24 divisors (see below), whose sum is σ = 261961920. Its totient is φ = 158708160.

The previous prime is 206879041. The next prime is 206879081. The reversal of 206879057 is 750978602.

It is not a de Polignac number, because 206879057 - 2⁴ = 206879041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206878999 and 206879017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206879017) 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 23 ways as a sum of consecutive naturals, for example, 1317623 + ... + 1317779.

It is an arithmetic number, because the mean of its divisors is an integer number (10915080).

Almost surely, 2^206879057 is an apocalyptic number.

It is an amenable number.

206879057 is a deficient number, since it is larger than the sum of its proper divisors (55082863).

206879057 is a wasteful number, since it uses less digits than its factorization.

206879057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 206879057 is about 14383.2908960363. The cubic root of 206879057 is about 591.4329404236.

The spelling of 206879057 in words is "two hundred six million, eight hundred seventy-nine thousand, fifty-seven".