8222740785 has 64 divisors (see below), whose sum is σ = 16779916800. Its totient is φ = 3742454016.

The previous prime is 8222740783. The next prime is 8222740811. The reversal of 8222740785 is 5870472228.

It is not a de Polignac number, because 8222740785 - 2¹ = 8222740783 is a prime.

It is a super-2 number, since 2×8222740785² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8222740785.

It is not an unprimeable number, because it can be changed into a prime (8222740781) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 197407 + ... + 235403.

It is an arithmetic number, because the mean of its divisors is an integer number (262186200).

Almost surely, 2^8222740785 is an apocalyptic number.

It is an amenable number.

8222740785 is an abundant number, since it is smaller than the sum of its proper divisors (8557176015).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8222740785 is a wasteful number, since it uses less digits than its factorization.

8222740785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38247 (or 38241 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The square root of 8222740785 is about 90679.3294251783. The cubic root of 8222740785 is about 2018.3920793369.

The spelling of 8222740785 in words is "eight billion, two hundred twenty-two million, seven hundred forty thousand, seven hundred eighty-five".