206830807 has 4 divisors (see below), whose sum is σ = 206977176. Its totient is φ = 206684440.

The previous prime is 206830801. The next prime is 206830831. The reversal of 206830807 is 708038602.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206830807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206830801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71044 + ... + 73897.

It is an arithmetic number, because the mean of its divisors is an integer number (51744294).

Almost surely, 2^206830807 is an apocalyptic number.

206830807 is a deficient number, since it is larger than the sum of its proper divisors (146369).

206830807 is a wasteful number, since it uses less digits than its factorization.

206830807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146368.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 206830807 is about 14381.6135047497. The cubic root of 206830807 is about 591.3869572639.

The spelling of 206830807 in words is "two hundred six million, eight hundred thirty thousand, eight hundred seven".