8521707650 has 24 divisors (see below), whose sum is σ = 15955359744. Its totient is φ = 3386106000.

The previous prime is 8521707647. The next prime is 8521707659. The reversal of 8521707650 is 567071258.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8521707598 and 8521707607.

It is not an unprimeable number, because it can be changed into a prime (8521707659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 556802 + ... + 571901.

It is an arithmetic number, because the mean of its divisors is an integer number (664806656).

Almost surely, 2^8521707650 is an apocalyptic number.

8521707650 is a deficient number, since it is larger than the sum of its proper divisors (7433652094).

8521707650 is a wasteful number, since it uses less digits than its factorization.

8521707650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128866 (or 1128861 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 41.

The square root of 8521707650 is about 92313.0957665271. The cubic root of 8521707650 is about 2042.5633905879.

The spelling of 8521707650 in words is "eight billion, five hundred twenty-one million, seven hundred seven thousand, six hundred fifty".