205155606 has 16 divisors (see below), whose sum is σ = 414296064. Its totient is φ = 67721064.

The previous prime is 205155593. The next prime is 205155617. The reversal of 205155606 is 606551502.

205155606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165366 + ... + 166601.

It is an arithmetic number, because the mean of its divisors is an integer number (25893504).

Almost surely, 2^205155606 is an apocalyptic number.

205155606 is an abundant number, since it is smaller than the sum of its proper divisors (209140458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205155606 is a wasteful number, since it uses less digits than its factorization.

205155606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332075.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 205155606 is about 14323.2540297238. The cubic root of 205155606 is about 589.7860049360.

It can be divided in two parts, 205155 and 606, that added together give a triangular number (205761 = T₆₄₁).

The spelling of 205155606 in words is "two hundred five million, one hundred fifty-five thousand, six hundred six".