206561132 has 12 divisors (see below), whose sum is σ = 363785520. Its totient is φ = 102622416.

The previous prime is 206561123. The next prime is 206561143. The reversal of 206561132 is 231165602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163832 + ... + 165087.

It is an arithmetic number, because the mean of its divisors is an integer number (30315460).

Almost surely, 2^206561132 is an apocalyptic number.

It is an amenable number.

206561132 is a deficient number, since it is larger than the sum of its proper divisors (157224388).

206561132 is a wasteful number, since it uses less digits than its factorization.

206561132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329080 (or 329078 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 206561132 is about 14372.2347601199. The cubic root of 206561132 is about 591.1298201324.

The spelling of 206561132 in words is "two hundred six million, five hundred sixty-one thousand, one hundred thirty-two".