206934557 has 16 divisors (see below), whose sum is σ = 222787584. Its totient is φ = 191520000.

The previous prime is 206934547. The next prime is 206934571. The reversal of 206934557 is 755439602.

It is a cyclic number.

It is not a de Polignac number, because 206934557 - 2⁶ = 206934493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206934547) 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, 327632 + ... + 328262.

It is an arithmetic number, because the mean of its divisors is an integer number (13924224).

Almost surely, 2^206934557 is an apocalyptic number.

It is an amenable number.

206934557 is a deficient number, since it is larger than the sum of its proper divisors (15853027).

206934557 is a wasteful number, since it uses less digits than its factorization.

206934557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940.

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 206934557 is about 14385.2200886883. The cubic root of 206934557 is about 591.4858241291.

The spelling of 206934557 in words is "two hundred six million, nine hundred thirty-four thousand, five hundred fifty-seven".