8564857332 has 48 divisors (see below), whose sum is σ = 20729533440. Its totient is φ = 2749074048.

The previous prime is 8564857321. The next prime is 8564857333. The reversal of 8564857332 is 2337584658.

It is a happy number.

It is a super-2 number, since 2×8564857332² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8564857333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96813 + ... + 162795.

It is an arithmetic number, because the mean of its divisors is an integer number (431865280).

Almost surely, 2^8564857332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8564857332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10364766720).

8564857332 is an abundant number, since it is smaller than the sum of its proper divisors (12164676108).

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

8564857332 is a wasteful number, since it uses less digits than its factorization.

8564857332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66392 (or 66390 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 51.

The square root of 8564857332 is about 92546.5144238291. The cubic root of 8564857332 is about 2046.0050958805.

The spelling of 8564857332 in words is "eight billion, five hundred sixty-four million, eight hundred fifty-seven thousand, three hundred thirty-two".