206466813 has 40 divisors (see below), whose sum is σ = 353707200. Its totient is φ = 117573120.

The previous prime is 206466811. The next prime is 206466823. The reversal of 206466813 is 318664602.

206466813 is a `hidden beast` number, since 2 + 0 + 646 + 6 + 8 + 1 + 3 = 666.

It is not a de Polignac number, because 206466813 - 2¹ = 206466811 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206466811) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 254178 + ... + 254988.

It is an arithmetic number, because the mean of its divisors is an integer number (8842680).

Almost surely, 2^206466813 is an apocalyptic number.

It is an amenable number.

206466813 is a deficient number, since it is larger than the sum of its proper divisors (147240387).

206466813 is an equidigital number, since it uses as much as digits as its factorization.

206466813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 206466813 is about 14368.9530933885. The cubic root of 206466813 is about 591.0398334357.

The spelling of 206466813 in words is "two hundred six million, four hundred sixty-six thousand, eight hundred thirteen".