8607643456 has 56 divisors (see below), whose sum is σ = 18099990216. Its totient is φ = 4047421440.

The previous prime is 8607643453. The next prime is 8607643459. The reversal of 8607643456 is 6543467068.

It is an interprime number because it is at equal distance from previous prime (8607643453) and next prime (8607643459).

It can be written as a sum of positive squares in 4 ways, for example, as 1355417856 + 7252225600 = 36816^2 + 85160^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8607643453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1870150 + ... + 1874746.

It is an arithmetic number, because the mean of its divisors is an integer number (323214111).

Almost surely, 2^8607643456 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 8607643456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9049995108).

8607643456 is an abundant number, since it is smaller than the sum of its proper divisors (9492346760).

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

8607643456 is a wasteful number, since it uses less digits than its factorization.

8607643456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6347 (or 6337 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 49.

The square root of 8607643456 is about 92777.3865551299. The cubic root of 8607643456 is about 2049.4064080308.

The spelling of 8607643456 in words is "eight billion, six hundred seven million, six hundred forty-three thousand, four hundred fifty-six".