206445913 has 8 divisors (see below), whose sum is σ = 210371040. Its totient is φ = 202556640.

The previous prime is 206445893. The next prime is 206445929. The reversal of 206445913 is 319544602.

It is a happy number.

206445913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206445913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206445413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2806 + ... + 20512.

It is an arithmetic number, because the mean of its divisors is an integer number (26296380).

Almost surely, 2^206445913 is an apocalyptic number.

It is an amenable number.

206445913 is a deficient number, since it is larger than the sum of its proper divisors (3925127).

206445913 is a wasteful number, since it uses less digits than its factorization.

206445913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17927.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 206445913 is about 14368.2258125351. The cubic root of 206445913 is about 591.0198897150.

The spelling of 206445913 in words is "two hundred six million, four hundred forty-five thousand, nine hundred thirteen".