8564206849 has 27 divisors (see below), whose sum is σ = 9672132001. Its totient is φ = 7577420840.

The previous prime is 8564206823. The next prime is 8564206853. The reversal of 8564206849 is 9486024658.

The square root of 8564206849 is 92543.

It is a perfect power (a square), and thus also a powerful number.

8564206849 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8564206849 - 2⁹ = 8564206337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8564206796 and 8564206805.

It is not an unprimeable number, because it can be changed into a prime (8564206879) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 47844642 + ... + 47844820.

Almost surely, 2^8564206849 is an apocalyptic number.

8564206849 is the 92543-rd square number.

8564206849 is the 46272-nd centered octagonal number.

It is an amenable number.

8564206849 is a deficient number, since it is larger than the sum of its proper divisors (1107925152).

8564206849 is an equidigital number, since it uses as much as digits as its factorization.

8564206849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 52.

The cubic root of 8564206849 is about 2045.9532979666.

The spelling of 8564206849 in words is "eight billion, five hundred sixty-four million, two hundred six thousand, eight hundred forty-nine".