206132645 has 4 divisors (see below), whose sum is σ = 247359180. Its totient is φ = 164906112.

The previous prime is 206132639. The next prime is 206132657. The reversal of 206132645 is 546231602.

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 106791556 + 99341089 = 10334^2 + 9967^2 .

It is a cyclic number.

It is not a de Polignac number, because 206132645 - 2¹⁰ = 206131621 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20613260 + ... + 20613269.

It is an arithmetic number, because the mean of its divisors is an integer number (61839795).

Almost surely, 2^206132645 is an apocalyptic number.

It is an amenable number.

206132645 is a deficient number, since it is larger than the sum of its proper divisors (41226535).

206132645 is an equidigital number, since it uses as much as digits as its factorization.

206132645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41226534.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 206132645 is about 14357.3202583212. The cubic root of 206132645 is about 590.7207938648.

The spelling of 206132645 in words is "two hundred six million, one hundred thirty-two thousand, six hundred forty-five".