8205494761 has 4 divisors (see below), whose sum is σ = 8215070292. Its totient is φ = 8195919232.

The previous prime is 8205494753. The next prime is 8205494767. The reversal of 8205494761 is 1674945028.

8205494761 is digitally balanced in base 3, 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 can be written as a sum of positive squares in 2 ways, for example, as 5449244761 + 2756250000 = 73819^2 + 52500^2 .

It is a cyclic number.

It is not a de Polignac number, because 8205494761 - 2³ = 8205494753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8205494767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4786480 + ... + 4788193.

It is an arithmetic number, because the mean of its divisors is an integer number (2053767573).

Almost surely, 2^8205494761 is an apocalyptic number.

It is an amenable number.

8205494761 is a deficient number, since it is larger than the sum of its proper divisors (9575531).

8205494761 is an equidigital number, since it uses as much as digits as its factorization.

8205494761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9575530.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 8205494761 is about 90584.1860425980. The cubic root of 8205494761 is about 2016.9799953231.

The spelling of 8205494761 in words is "eight billion, two hundred five million, four hundred ninety-four thousand, seven hundred sixty-one".