8521082647 has 32 divisors (see below), whose sum is σ = 10927102464. Its totient is φ = 6450710400.

The previous prime is 8521082641. The next prime is 8521082651. The reversal of 8521082647 is 7462801258.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8521082647 - 2¹¹ = 8521080599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8521082641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2337208 + ... + 2340850.

It is an arithmetic number, because the mean of its divisors is an integer number (341471952).

Almost surely, 2^8521082647 is an apocalyptic number.

8521082647 is a deficient number, since it is larger than the sum of its proper divisors (2406019817).

8521082647 is a wasteful number, since it uses less digits than its factorization.

8521082647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4519.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 8521082647 is about 92309.7104697009. The cubic root of 8521082647 is about 2042.5134538260.

The spelling of 8521082647 in words is "eight billion, five hundred twenty-one million, eighty-two thousand, six hundred forty-seven".