206600326645 has 4 divisors (see below), whose sum is σ = 247920391980. Its totient is φ = 165280261312.

The previous prime is 206600326643. The next prime is 206600326679. The reversal of 206600326645 is 546623006602.

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 148978244529 + 57622082116 = 385977^2 + 240046^2 .

It is a cyclic number.

It is not a de Polignac number, because 206600326645 - 2¹ = 206600326643 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 206600326598 and 206600326607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206600326643) 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, 20660032660 + ... + 20660032669.

It is an arithmetic number, because the mean of its divisors is an integer number (61980097995).

Almost surely, 2^206600326645 is an apocalyptic number.

It is an amenable number.

206600326645 is a deficient number, since it is larger than the sum of its proper divisors (41320065335).

206600326645 is an equidigital number, since it uses as much as digits as its factorization.

206600326645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41320065334.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 206600326645 in words is "two hundred six billion, six hundred million, three hundred twenty-six thousand, six hundred forty-five".