206047045 has 4 divisors (see below), whose sum is σ = 247256460. Its totient is φ = 164837632.

The previous prime is 206047031. The next prime is 206047069. The reversal of 206047045 is 540740602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38551681 + 167495364 = 6209^2 + 12942^2 .

It is a cyclic number.

It is not a de Polignac number, because 206047045 - 2¹⁷ = 205915973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20604700 + ... + 20604709.

It is an arithmetic number, because the mean of its divisors is an integer number (61814115).

Almost surely, 2^206047045 is an apocalyptic number.

It is an amenable number.

206047045 is a deficient number, since it is larger than the sum of its proper divisors (41209415).

206047045 is an equidigital number, since it uses as much as digits as its factorization.

206047045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41209414.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 206047045 is about 14354.3388910810. The cubic root of 206047045 is about 590.6390136742.

Adding to 206047045 its reverse (540740602), we get a palindrome (746787647).

The spelling of 206047045 in words is "two hundred six million, forty-seven thousand, forty-five".