8651656 has 32 divisors (see below), whose sum is σ = 17904600. Its totient is φ = 3893760.

The previous prime is 8651647. The next prime is 8651663. The reversal of 8651656 is 6561568.

It can be written as a sum of positive squares in 4 ways, for example, as 6502500 + 2149156 = 2550^2 + 1466^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3250 + ... + 5278.

Almost surely, 2^8651656 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 8651656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8952300).

8651656 is an abundant number, since it is smaller than the sum of its proper divisors (9252944).

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

8651656 is a wasteful number, since it uses less digits than its factorization.

8651656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089 (or 2085 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 8651656 is about 2941.3697489435. The cubic root of 8651656 is about 205.2893475055.

The spelling of 8651656 in words is "eight million, six hundred fifty-one thousand, six hundred fifty-six".