205613164 has 12 divisors (see below), whose sum is σ = 380989224. Its totient is φ = 96759104.

The previous prime is 205613153. The next prime is 205613179. The reversal of 205613164 is 461316502.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1511794 + ... + 1511929.

It is an arithmetic number, because the mean of its divisors is an integer number (31749102).

Almost surely, 2^205613164 is an apocalyptic number.

It is an amenable number.

205613164 is a deficient number, since it is larger than the sum of its proper divisors (175376060).

205613164 is a wasteful number, since it uses less digits than its factorization.

205613164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023744 (or 3023742 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 205613164 is about 14339.2176913526. The cubic root of 205613164 is about 590.2241454198.

Adding to 205613164 its reverse (461316502), we get a palindrome (666929666).

The spelling of 205613164 in words is "two hundred five million, six hundred thirteen thousand, one hundred sixty-four".