8564905822 has 32 divisors (see below), whose sum is σ = 14396193504. Its totient is φ = 3787852800.

The previous prime is 8564905819. The next prime is 8564905913. The reversal of 8564905822 is 2285094658.

It is a happy number.

It is a super-2 number, since 2×8564905822² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 323718 + ... + 349174.

It is an arithmetic number, because the mean of its divisors is an integer number (449881047).

Almost surely, 2^8564905822 is an apocalyptic number.

8564905822 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

8564905822 is a deficient number, since it is larger than the sum of its proper divisors (5831287682).

8564905822 is a wasteful number, since it uses less digits than its factorization.

8564905822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25884.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The square root of 8564905822 is about 92546.7763998293. The cubic root of 8564905822 is about 2046.0089570306.

The spelling of 8564905822 in words is "eight billion, five hundred sixty-four million, nine hundred five thousand, eight hundred twenty-two".