206001 has 12 divisors (see below), whose sum is σ = 304512. Its totient is φ = 134136.

The previous prime is 205993. The next prime is 206009. The reversal of 206001 is 100602.

206001 = 74² + 75² + ... + 100².

It is an interprime number because it is at equal distance from previous prime (205993) and next prime (206009).

It is not a de Polignac number, because 206001 - 2³ = 205993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (206009) 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, 180 + ... + 666.

It is an arithmetic number, because the mean of its divisors is an integer number (25376).

2²⁰⁶⁰⁰¹ is an apocalyptic number.

It is an amenable number.

206001 is a deficient number, since it is larger than the sum of its proper divisors (98511).

206001 is a wasteful number, since it uses less digits than its factorization.

206001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 206001 is about 453.8733303467. The cubic root of 206001 is about 59.0595014015.

Adding to 206001 its reverse (100602), we get a palindrome (306603).

The spelling of 206001 in words is "two hundred six thousand, one".