206757057 has 16 divisors (see below), whose sum is σ = 300222720. Its totient is φ = 125803392.

The previous prime is 206757053. The next prime is 206757071. The reversal of 206757057 is 750757602.

It is not a de Polignac number, because 206757057 - 2² = 206757053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (206757053) 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, 26313 + ... + 33254.

It is an arithmetic number, because the mean of its divisors is an integer number (18763920).

Almost surely, 2^206757057 is an apocalyptic number.

It is an amenable number.

206757057 is a deficient number, since it is larger than the sum of its proper divisors (93465663).

206757057 is a wasteful number, since it uses less digits than its factorization.

206757057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59672.

The product of its (nonzero) digits is 102900, while the sum is 39.

The square root of 206757057 is about 14379.0492383885. The cubic root of 206757057 is about 591.3166583020.

The spelling of 206757057 in words is "two hundred six million, seven hundred fifty-seven thousand, fifty-seven".