206798887 has 4 divisors (see below), whose sum is σ = 209122560. Its totient is φ = 204475216.

The previous prime is 206798857. The next prime is 206798909. The reversal of 206798887 is 788897602.

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

It is a cyclic number.

It is not a de Polignac number, because 206798887 - 2⁷ = 206798759 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 (206798807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161703 + ... + 1161880.

It is an arithmetic number, because the mean of its divisors is an integer number (52280640).

Almost surely, 2^206798887 is an apocalyptic number.

206798887 is a deficient number, since it is larger than the sum of its proper divisors (2323673).

206798887 is an equidigital number, since it uses as much as digits as its factorization.

206798887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323672.

The product of its (nonzero) digits is 2709504, while the sum is 55.

The square root of 206798887 is about 14380.5037116229. The cubic root of 206798887 is about 591.3565329715.

The spelling of 206798887 in words is "two hundred six million, seven hundred ninety-eight thousand, eight hundred eighty-seven".