206940170 has 8 divisors (see below), whose sum is σ = 372492324. Its totient is φ = 82776064.

The previous prime is 206940163. The next prime is 206940187. The reversal of 206940170 is 71049602.

It can be written as a sum of positive squares in 2 ways, for example, as 202407529 + 4532641 = 14227^2 + 2129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10346999 + ... + 10347018.

Almost surely, 2^206940170 is an apocalyptic number.

206940170 is a deficient number, since it is larger than the sum of its proper divisors (165552154).

206940170 is a wasteful number, since it uses less digits than its factorization.

206940170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20694024.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 206940170 is about 14385.4151834419. The cubic root of 206940170 is about 591.4911720032.

Adding to 206940170 its reverse (71049602), we get a palindrome (277989772).

The spelling of 206940170 in words is "two hundred six million, nine hundred forty thousand, one hundred seventy".