206460805 has 4 divisors (see below), whose sum is σ = 247752972. Its totient is φ = 165168640.

The previous prime is 206460797. The next prime is 206460823. The reversal of 206460805 is 508064602.

206460805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 508064602 = 2 ⋅254032301.

It can be written as a sum of positive squares in 2 ways, for example, as 29224836 + 177235969 = 5406^2 + 13313^2 .

It is not a de Polignac number, because 206460805 - 2³ = 206460797 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20646076 + ... + 20646085.

It is an arithmetic number, because the mean of its divisors is an integer number (61938243).

Almost surely, 2^206460805 is an apocalyptic number.

It is an amenable number.

206460805 is a deficient number, since it is larger than the sum of its proper divisors (41292167).

206460805 is an equidigital number, since it uses as much as digits as its factorization.

206460805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41292166.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 206460805 is about 14368.7440300118. The cubic root of 206460805 is about 591.0341004695.

The spelling of 206460805 in words is "two hundred six million, four hundred sixty thousand, eight hundred five".