206664323 has 2 divisors, whose sum is σ = 206664324. Its totient is φ = 206664322.

The previous prime is 206664301. The next prime is 206664391. The reversal of 206664323 is 323466602.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206664323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206664323.

It is not a weakly prime, because it can be changed into another prime (206664023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103332161 + 103332162.

It is an arithmetic number, because the mean of its divisors is an integer number (103332162).

Almost surely, 2^206664323 is an apocalyptic number.

206664323 is a deficient number, since it is larger than the sum of its proper divisors (1).

206664323 is an equidigital number, since it uses as much as digits as its factorization.

206664323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 206664323 is about 14375.8242546297. The cubic root of 206664323 is about 591.2282399428.

The spelling of 206664323 in words is "two hundred six million, six hundred sixty-four thousand, three hundred twenty-three".