206538963 has 4 divisors (see below), whose sum is σ = 275385288. Its totient is φ = 137692640.

The previous prime is 206538961. The next prime is 206538979. The reversal of 206538963 is 369835602.

206538963 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.

It is a cyclic number.

It is not a de Polignac number, because 206538963 - 2¹ = 206538961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206538961) 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, 34423158 + ... + 34423163.

It is an arithmetic number, because the mean of its divisors is an integer number (68846322).

Almost surely, 2^206538963 is an apocalyptic number.

206538963 is a deficient number, since it is larger than the sum of its proper divisors (68846325).

206538963 is an equidigital number, since it uses as much as digits as its factorization.

206538963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68846324.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 206538963 is about 14371.4634954134. The cubic root of 206538963 is about 591.1086718720.

The spelling of 206538963 in words is "two hundred six million, five hundred thirty-eight thousand, nine hundred sixty-three".