206310689 has 8 divisors (see below), whose sum is σ = 227348352. Its totient is φ = 186011280.

The previous prime is 206310653. The next prime is 206310703. The reversal of 206310689 is 986013602.

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

It is a de Polignac number, because none of the positive numbers 2^k-206310689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206810689) 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, 183977 + ... + 185094.

It is an arithmetic number, because the mean of its divisors is an integer number (28418544).

Almost surely, 2^206310689 is an apocalyptic number.

It is an amenable number.

206310689 is a deficient number, since it is larger than the sum of its proper divisors (21037663).

206310689 is a wasteful number, since it uses less digits than its factorization.

206310689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369127.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 206310689 is about 14363.5193807089. The cubic root of 206310689 is about 590.8908203488.

The spelling of 206310689 in words is "two hundred six million, three hundred ten thousand, six hundred eighty-nine".