206257089 has 8 divisors (see below), whose sum is σ = 275184000. Its totient is φ = 137417456.

The previous prime is 206257087. The next prime is 206257099. The reversal of 206257089 is 980752602.

It is a happy number.

206257089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206257089 - 2¹ = 206257087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206257087) 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, 16089 + ... + 25910.

It is an arithmetic number, because the mean of its divisors is an integer number (34398000).

Almost surely, 2^206257089 is an apocalyptic number.

It is an amenable number.

206257089 is a deficient number, since it is larger than the sum of its proper divisors (68926911).

206257089 is a wasteful number, since it uses less digits than its factorization.

206257089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43639.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 206257089 is about 14361.6534215250. The cubic root of 206257089 is about 590.8396443105.

The spelling of 206257089 in words is "two hundred six million, two hundred fifty-seven thousand, eighty-nine".