206985494 has 4 divisors (see below), whose sum is σ = 310478244. Its totient is φ = 103492746.

The previous prime is 206985463. The next prime is 206985517. The reversal of 206985494 is 494589602.

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

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 (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51746372 + ... + 51746375.

It is an arithmetic number, because the mean of its divisors is an integer number (77619561).

Almost surely, 2^206985494 is an apocalyptic number.

206985494 is a deficient number, since it is larger than the sum of its proper divisors (103492750).

206985494 is a wasteful number, since it uses less digits than its factorization.

206985494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103492749.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 206985494 is about 14386.9904427577. The cubic root of 206985494 is about 591.5343516155.

The spelling of 206985494 in words is "two hundred six million, nine hundred eighty-five thousand, four hundred ninety-four".