206887398 has 16 divisors (see below), whose sum is σ = 414071616. Its totient is φ = 68913000.

The previous prime is 206887391. The next prime is 206887403. The reversal of 206887398 is 893788602.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 206887398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206887391) 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, 2728 + ... + 20523.

It is an arithmetic number, because the mean of its divisors is an integer number (25879476).

Almost surely, 2^206887398 is an apocalyptic number.

206887398 is an abundant number, since it is smaller than the sum of its proper divisors (207184218).

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

206887398 is a wasteful number, since it uses less digits than its factorization.

206887398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24739.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 206887398 is about 14383.5808476193. The cubic root of 206887398 is about 591.4408888291.

The spelling of 206887398 in words is "two hundred six million, eight hundred eighty-seven thousand, three hundred ninety-eight".