206489733 has 4 divisors (see below), whose sum is σ = 275319648. Its totient is φ = 137659820.

The previous prime is 206489719. The next prime is 206489743. The reversal of 206489733 is 337984602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206489733 - 2⁶ = 206489669 is a prime.

It is a super-3 number, since 3×206489733³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206489743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34414953 + ... + 34414958.

It is an arithmetic number, because the mean of its divisors is an integer number (68829912).

Almost surely, 2^206489733 is an apocalyptic number.

It is an amenable number.

206489733 is a deficient number, since it is larger than the sum of its proper divisors (68829915).

206489733 is an equidigital number, since it uses as much as digits as its factorization.

206489733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68829914.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 206489733 is about 14369.7506241410. The cubic root of 206489733 is about 591.0617031840.

It can be divided in two parts, 20648 and 9733, that added together give a triangular number (30381 = T₂₄₆).

The spelling of 206489733 in words is "two hundred six million, four hundred eighty-nine thousand, seven hundred thirty-three".