206830815 has 8 divisors (see below), whose sum is σ = 330929328. Its totient is φ = 110309760.

The previous prime is 206830801. The next prime is 206830831. The reversal of 206830815 is 518038602.

It is a happy number.

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

It is not a de Polignac number, because 206830815 - 2¹¹ = 206828767 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6894346 + ... + 6894375.

It is an arithmetic number, because the mean of its divisors is an integer number (41366166).

Almost surely, 2^206830815 is an apocalyptic number.

206830815 is a deficient number, since it is larger than the sum of its proper divisors (124098513).

206830815 is a wasteful number, since it uses less digits than its factorization.

206830815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13788729.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 206830815 is about 14381.6137828826. The cubic root of 206830815 is about 591.3869648886.

The spelling of 206830815 in words is "two hundred six million, eight hundred thirty thousand, eight hundred fifteen".