8857645056 has 416 divisors, whose sum is σ = 29007935040. Its totient is φ = 2654208000.

The previous prime is 8857645009. The next prime is 8857645057. The reversal of 8857645056 is 6505467588.

8857645056 is a `hidden beast` number, since 88 + 57 + 6 + 4 + 505 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (416).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 8857644993 and 8857645011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8857645057) 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, 87699406 + ... + 87699506.

Almost surely, 2^8857645056 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 8857645056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14503967520).

8857645056 is an abundant number, since it is smaller than the sum of its proper divisors (20150289984).

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

8857645056 is a wasteful number, since it uses less digits than its factorization.

8857645056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The square root of 8857645056 is about 94115.0628539343. The cubic root of 8857645056 is about 2069.0584417740.

The spelling of 8857645056 in words is "eight billion, eight hundred fifty-seven million, six hundred forty-five thousand, fifty-six".