206841816 has 32 divisors (see below), whose sum is σ = 574561200. Its totient is φ = 68947200.

The previous prime is 206841781. The next prime is 206841841. The reversal of 206841816 is 618148602.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478585 + ... + 479016.

Almost surely, 2^206841816 is an apocalyptic number.

It is an amenable number.

206841816 is an abundant number, since it is smaller than the sum of its proper divisors (367719384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206841816 is a wasteful number, since it uses less digits than its factorization.

206841816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957616 (or 957606 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 206841816 is about 14381.9962453061. The cubic root of 206841816 is about 591.3974496781.

It can be divided in two parts, 20684 and 1816, that added together give a square (22500 = 150²).

The spelling of 206841816 in words is "two hundred six million, eight hundred forty-one thousand, eight hundred sixteen".