205565034 has 16 divisors (see below), whose sum is σ = 411953472. Its totient is φ = 68384448.

The previous prime is 205565033. The next prime is 205565089. The reversal of 205565034 is 430565502.

It is a junction number, because it is equal to n+sod(n) for n = 205564992 and 205565010.

It is not an unprimeable number, because it can be changed into a prime (205565033) 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, 31039 + ... + 37074.

It is an arithmetic number, because the mean of its divisors is an integer number (25747092).

Almost surely, 2^205565034 is an apocalyptic number.

205565034 is an abundant number, since it is smaller than the sum of its proper divisors (206388438).

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

205565034 is a wasteful number, since it uses less digits than its factorization.

205565034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68621.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 205565034 is about 14337.5393286296. The cubic root of 205565034 is about 590.1780885357.

The spelling of 205565034 in words is "two hundred five million, five hundred sixty-five thousand, thirty-four".