206526636 has 72 divisors (see below), whose sum is σ = 535757040. Its totient is φ = 67060224.

The previous prime is 206526623. The next prime is 206526647. The reversal of 206526636 is 636625602.

206526636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 206526636.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233451 + ... + 234333.

It is an arithmetic number, because the mean of its divisors is an integer number (7441070).

Almost surely, 2^206526636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206526636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267878520).

206526636 is an abundant number, since it is smaller than the sum of its proper divisors (329230404).

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

206526636 is a wasteful number, since it uses less digits than its factorization.

206526636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 206526636 is about 14371.0346182869. The cubic root of 206526636 is about 591.0969117962.

The spelling of 206526636 in words is "two hundred six million, five hundred twenty-six thousand, six hundred thirty-six".