206115406 has 16 divisors (see below), whose sum is σ = 354170880. Its totient is φ = 88127640.

The previous prime is 206115391. The next prime is 206115407. The reversal of 206115406 is 604511602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206115407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11046 + ... + 23113.

It is an arithmetic number, because the mean of its divisors is an integer number (22135680).

Almost surely, 2^206115406 is an apocalyptic number.

206115406 is a deficient number, since it is larger than the sum of its proper divisors (148055474).

206115406 is a wasteful number, since it uses less digits than its factorization.

206115406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34599.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 206115406 is about 14356.7198900027. The cubic root of 206115406 is about 590.7043259578.

The spelling of 206115406 in words is "two hundred six million, one hundred fifteen thousand, four hundred six".