8206779845 has 32 divisors (see below), whose sum is σ = 11220629760. Its totient is φ = 5703920640.

The previous prime is 8206779829. The next prime is 8206779863. The reversal of 8206779845 is 5489776028.

It is not a de Polignac number, because 8206779845 - 2⁴ = 8206779829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1881407 + ... + 1885763.

It is an arithmetic number, because the mean of its divisors is an integer number (350644680).

Almost surely, 2^8206779845 is an apocalyptic number.

It is an amenable number.

8206779845 is a deficient number, since it is larger than the sum of its proper divisors (3013849915).

8206779845 is a wasteful number, since it uses less digits than its factorization.

8206779845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5885.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The square root of 8206779845 is about 90591.2790780658. The cubic root of 8206779845 is about 2017.0852846645.

The spelling of 8206779845 in words is "eight billion, two hundred six million, seven hundred seventy-nine thousand, eight hundred forty-five".