206243769 has 4 divisors (see below), whose sum is σ = 274991696. Its totient is φ = 137495844.

The previous prime is 206243759. The next prime is 206243771. The reversal of 206243769 is 967342602.

206243769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 206243769 - 2⁴ = 206243753 is a prime.

It is a super-2 number, since 2×206243769² = 85072984502650722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206243729) 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, 34373959 + ... + 34373964.

It is an arithmetic number, because the mean of its divisors is an integer number (68747924).

Almost surely, 2^206243769 is an apocalyptic number.

It is an amenable number.

206243769 is a deficient number, since it is larger than the sum of its proper divisors (68747927).

206243769 is an equidigital number, since it uses as much as digits as its factorization.

206243769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68747926.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 206243769 is about 14361.1896791317. The cubic root of 206243769 is about 590.8269253077.

The spelling of 206243769 in words is "two hundred six million, two hundred forty-three thousand, seven hundred sixty-nine".