205985167 has 4 divisors (see below), whose sum is σ = 208467000. Its totient is φ = 203503336.

The previous prime is 205985159. The next prime is 205985177. The reversal of 205985167 is 761589502.

205985167 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205985167 - 2³ = 205985159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205985177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240792 + ... + 1240957.

It is an arithmetic number, because the mean of its divisors is an integer number (52116750).

Almost surely, 2^205985167 is an apocalyptic number.

205985167 is a deficient number, since it is larger than the sum of its proper divisors (2481833).

205985167 is an equidigital number, since it uses as much as digits as its factorization.

205985167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481832.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 205985167 is about 14352.1833530651. The cubic root of 205985167 is about 590.5798828092.

The spelling of 205985167 in words is "two hundred five million, nine hundred eighty-five thousand, one hundred sixty-seven".