206990206 has 4 divisors (see below), whose sum is σ = 310485312. Its totient is φ = 103495102.

The previous prime is 206990183. The next prime is 206990221. The reversal of 206990206 is 602099602.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 51747550 + ... + 51747553.

It is an arithmetic number, because the mean of its divisors is an integer number (77621328).

Almost surely, 2^206990206 is an apocalyptic number.

206990206 is a deficient number, since it is larger than the sum of its proper divisors (103495106).

206990206 is a wasteful number, since it uses less digits than its factorization.

206990206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103495105.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 206990206 is about 14387.1542008835. The cubic root of 206990206 is about 591.5388403177.

The spelling of 206990206 in words is "two hundred six million, nine hundred ninety thousand, two hundred six".