8138656 has 24 divisors (see below), whose sum is σ = 16087680. Its totient is φ = 4052928.

The previous prime is 8138651. The next prime is 8138657. The reversal of 8138656 is 6568318.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (8138651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13105 + ... + 13711.

It is an arithmetic number, because the mean of its divisors is an integer number (670320).

Almost surely, 2^8138656 is an apocalyptic number.

It is an amenable number.

8138656 is a deficient number, since it is larger than the sum of its proper divisors (7949024).

8138656 is a wasteful number, since it uses less digits than its factorization.

8138656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 1028 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 8138656 is about 2852.8329779361. The cubic root of 8138656 is about 201.1488546950.

The spelling of 8138656 in words is "eight million, one hundred thirty-eight thousand, six hundred fifty-six".