206560 has 24 divisors (see below), whose sum is σ = 488376. Its totient is φ = 82560.

The previous prime is 206551. The next prime is 206593. The reversal of 206560 is 65602.

It is a congruent number.

It is an unprimeable number.

206560 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486 + ... + 805.

It is an arithmetic number, because the mean of its divisors is an integer number (20349).

2²⁰⁶⁵⁶⁰ is an apocalyptic number.

206560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206560 is an abundant number, since it is smaller than the sum of its proper divisors (281816).

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

206560 is a wasteful number, since it uses less digits than its factorization.

206560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 1298 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 206560 is about 454.4887237325. The cubic root of 206560 is about 59.1128740290.

The spelling of 206560 in words is "two hundred six thousand, five hundred sixty".