205485567 has 12 divisors (see below), whose sum is σ = 318712536. Its totient is φ = 117420240.

The previous prime is 205485559. The next prime is 205485649. The reversal of 205485567 is 765584502.

It is not a de Polignac number, because 205485567 - 2³ = 205485559 is a prime.

It is a super-2 number, since 2×205485567² = 84448636490622978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205485547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 698784 + ... + 699077.

It is an arithmetic number, because the mean of its divisors is an integer number (26559378).

Almost surely, 2^205485567 is an apocalyptic number.

205485567 is a deficient number, since it is larger than the sum of its proper divisors (113226969).

205485567 is a wasteful number, since it uses less digits than its factorization.

205485567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397878 (or 1397871 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 42.

The square root of 205485567 is about 14334.7677693083. The cubic root of 205485567 is about 590.1020287020.

The spelling of 205485567 in words is "two hundred five million, four hundred eighty-five thousand, five hundred sixty-seven".