206876564793 has 24 divisors (see below), whose sum is σ = 306287621640. Its totient is φ = 134475805440.

The previous prime is 206876564767. The next prime is 206876564809. The reversal of 206876564793 is 397465678602.

206876564793 is a `hidden beast` number, since 2 + 0 + 68 + 7 + 6 + 564 + 7 + 9 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12816051264 + 194060513529 = 113208^2 + 440523^2 .

It is not a de Polignac number, because 206876564793 - 2⁵ = 206876564761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206876564793.

It is not an unprimeable number, because it can be changed into a prime (206876564723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 477723 + ... + 801231.

It is an arithmetic number, because the mean of its divisors is an integer number (12761984235).

Almost surely, 2^206876564793 is an apocalyptic number.

It is an amenable number.

206876564793 is a deficient number, since it is larger than the sum of its proper divisors (99411056847).

206876564793 is a wasteful number, since it uses less digits than its factorization.

206876564793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325289 (or 325286 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 63.

The spelling of 206876564793 in words is "two hundred six billion, eight hundred seventy-six million, five hundred sixty-four thousand, seven hundred ninety-three".