206132005 has 4 divisors (see below), whose sum is σ = 247358412. Its totient is φ = 164905600.

The previous prime is 206131997. The next prime is 206132009. The reversal of 206132005 is 500231602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113337316 + 92794689 = 10646^2 + 9633^2 .

It is not a de Polignac number, because 206132005 - 2³ = 206131997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206132009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20613196 + ... + 20613205.

It is an arithmetic number, because the mean of its divisors is an integer number (61839603).

Almost surely, 2^206132005 is an apocalyptic number.

It is an amenable number.

206132005 is a deficient number, since it is larger than the sum of its proper divisors (41226407).

206132005 is an equidigital number, since it uses as much as digits as its factorization.

206132005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41226406.

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

The square root of 206132005 is about 14357.2979700221. The cubic root of 206132005 is about 590.7201825081.

Adding to 206132005 its reverse (500231602), we get a palindrome (706363607).

The spelling of 206132005 in words is "two hundred six million, one hundred thirty-two thousand, five".