206993366 has 16 divisors (see below), whose sum is σ = 312714864. Its totient is φ = 102758304.

The previous prime is 206993341. The next prime is 206993407. The reversal of 206993366 is 663399602.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218105 + ... + 219051.

It is an arithmetic number, because the mean of its divisors is an integer number (19544679).

Almost surely, 2^206993366 is an apocalyptic number.

206993366 is a deficient number, since it is larger than the sum of its proper divisors (105721498).

206993366 is a wasteful number, since it uses less digits than its factorization.

206993366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615.

The product of its (nonzero) digits is 314928, while the sum is 44.

The square root of 206993366 is about 14387.2640206538. The cubic root of 206993366 is about 591.5418505297.

The spelling of 206993366 in words is "two hundred six million, nine hundred ninety-three thousand, three hundred sixty-six".