206639598 has 48 divisors (see below), whose sum is σ = 463567104. Its totient is φ = 60899040.

The previous prime is 206639593. The next prime is 206639603. The reversal of 206639598 is 895936602.

It is an interprime number because it is at equal distance from previous prime (206639593) and next prime (206639603).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206639593) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 89211 + ... + 91497.

It is an arithmetic number, because the mean of its divisors is an integer number (9657648).

Almost surely, 2^206639598 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206639598, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231783552).

206639598 is an abundant number, since it is smaller than the sum of its proper divisors (256927506).

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

206639598 is a wasteful number, since it uses less digits than its factorization.

206639598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377 (or 2340 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 206639598 is about 14374.9642782165. The cubic root of 206639598 is about 591.2046611250.

The spelling of 206639598 in words is "two hundred six million, six hundred thirty-nine thousand, five hundred ninety-eight".