206071049 has 6 divisors (see below), whose sum is σ = 210035406. Its totient is φ = 202180160.

The previous prime is 206071031. The next prime is 206071051. The reversal of 206071049 is 940170602.

It can be written as a sum of positive squares in 3 ways, for example, as 107267449 + 98803600 = 10357^2 + 9940^2 .

It is not a de Polignac number, because 206071049 - 2⁸ = 206070793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206071009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33872 + ... + 39489.

It is an arithmetic number, because the mean of its divisors is an integer number (35005901).

Almost surely, 2^206071049 is an apocalyptic number.

It is an amenable number.

206071049 is a deficient number, since it is larger than the sum of its proper divisors (3964357).

206071049 is an frugal number, since it uses more digits than its factorization.

206071049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73467 (or 73414 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 206071049 is about 14355.1749902257. The cubic root of 206071049 is about 590.6619488059.

The spelling of 206071049 in words is "two hundred six million, seventy-one thousand, forty-nine".