206986417 has 8 divisors (see below), whose sum is σ = 225972000. Its totient is φ = 188028960.

The previous prime is 206986379. The next prime is 206986433. The reversal of 206986417 is 714689602.

206986417 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 not a de Polignac number, because 206986417 - 2⁷ = 206986289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206986487) 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, 10213 + ... + 22765.

It is an arithmetic number, because the mean of its divisors is an integer number (28246500).

Almost surely, 2^206986417 is an apocalyptic number.

It is an amenable number.

206986417 is a deficient number, since it is larger than the sum of its proper divisors (18985583).

206986417 is a wasteful number, since it uses less digits than its factorization.

206986417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14063.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 206986417 is about 14387.0225203132. The cubic root of 206986417 is about 591.5352308806.

The spelling of 206986417 in words is "two hundred six million, nine hundred eighty-six thousand, four hundred seventeen".