206475993 has 8 divisors (see below), whose sum is σ = 305890400. Its totient is φ = 137650644.

The previous prime is 206475953. The next prime is 206476003. The reversal of 206475993 is 399574602.

It is a happy number.

206475993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206475993 - 2⁹ = 206475481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206475953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3823603 + ... + 3823656.

It is an arithmetic number, because the mean of its divisors is an integer number (38236300).

Almost surely, 2^206475993 is an apocalyptic number.

It is an amenable number.

206475993 is a deficient number, since it is larger than the sum of its proper divisors (99414407).

206475993 is an equidigital number, since it uses as much as digits as its factorization.

206475993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7647268 (or 7647262 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 206475993 is about 14369.2725285590. The cubic root of 206475993 is about 591.0485929794.

The spelling of 206475993 in words is "two hundred six million, four hundred seventy-five thousand, nine hundred ninety-three".