206749269 has 12 divisors (see below), whose sum is σ = 300990976. Its totient is φ = 136746792.

The previous prime is 206749243. The next prime is 206749307. The reversal of 206749269 is 962947602.

It is not a de Polignac number, because 206749269 - 2¹¹ = 206747221 is a prime.

It is a super-2 number, since 2×206749269² = 85490520464068722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206749219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89299 + ... + 91584.

Almost surely, 2^206749269 is an apocalyptic number.

It is an amenable number.

206749269 is a deficient number, since it is larger than the sum of its proper divisors (94241707).

206749269 is a wasteful number, since it uses less digits than its factorization.

206749269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181016 (or 181013 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 206749269 is about 14378.7784251653. The cubic root of 206749269 is about 591.3092337558.

It can be divided in two parts, 2067492 and 69, that added together give a triangular number (2067561 = T₂₀₃₃).

The spelling of 206749269 in words is "two hundred six million, seven hundred forty-nine thousand, two hundred sixty-nine".