206830729 has 16 divisors (see below), whose sum is σ = 246445056. Its totient is φ = 169848000.

The previous prime is 206830727. The next prime is 206830733. The reversal of 206830729 is 927038602.

It is not a de Polignac number, because 206830729 - 2¹ = 206830727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206830727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17199 + ... + 26635.

It is an arithmetic number, because the mean of its divisors is an integer number (15402816).

Almost surely, 2^206830729 is an apocalyptic number.

It is an amenable number.

206830729 is a deficient number, since it is larger than the sum of its proper divisors (39614327).

206830729 is a wasteful number, since it uses less digits than its factorization.

206830729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9576.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 206830729 is about 14381.6107929536. The cubic root of 206830729 is about 591.3868829226.

The spelling of 206830729 in words is "two hundred six million, eight hundred thirty thousand, seven hundred twenty-nine".