8505847690 has 16 divisors (see below), whose sum is σ = 15570027360. Its totient is φ = 3344672080.

The previous prime is 8505847657. The next prime is 8505847699. The reversal of 8505847690 is 967485058.

It is a super-2 number, since 2×8505847690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8505847699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7207756 + ... + 7208935.

It is an arithmetic number, because the mean of its divisors is an integer number (973126710).

Almost surely, 2^8505847690 is an apocalyptic number.

8505847690 is a deficient number, since it is larger than the sum of its proper divisors (7064179670).

8505847690 is a wasteful number, since it uses less digits than its factorization.

8505847690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14416757.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The square root of 8505847690 is about 92227.1526720846. The cubic root of 8505847690 is about 2041.2954486512.

The spelling of 8505847690 in words is "eight billion, five hundred five million, eight hundred forty-seven thousand, six hundred ninety".