206601 has 8 divisors (see below), whose sum is σ = 291744. Its totient is φ = 129600.

The previous prime is 206597. The next prime is 206603. The reversal of 206601 is 106602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206601 - 2² = 206597 is a prime.

206601 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (206603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1975 + ... + 2076.

It is an arithmetic number, because the mean of its divisors is an integer number (36468).

It is a Poulet number, since it divides 2²⁰⁶⁶⁰⁰-1.

2²⁰⁶⁶⁰¹ is an apocalyptic number.

It is an amenable number.

206601 is a deficient number, since it is larger than the sum of its proper divisors (85143).

206601 is a wasteful number, since it uses less digits than its factorization.

206601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4071.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 206601 is about 454.5338271240. The cubic root of 206601 is about 59.1167848661.

Subtracting from 206601 its reverse (106602), we obtain a palindrome (99999).

The spelling of 206601 in words is "two hundred six thousand, six hundred one".