8068644 has 18 divisors (see below), whose sum is σ = 20395830. Its totient is φ = 2689536.

The previous prime is 8068633. The next prime is 8068681. The reversal of 8068644 is 4468608.

8068644 is a `hidden beast` number, since 8 + 0 + 6 + 8 + 644 = 666.

8068644 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8054244 + 14400 = 2838^2 + 120^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 224129 = 8068644 / (8 + 0 + 6 + 8 + 6 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 8068599 and 8068608.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112029 + ... + 112100.

Almost surely, 2^8068644 is an apocalyptic number.

It is an amenable number.

8068644 is an abundant number, since it is smaller than the sum of its proper divisors (12327186).

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

8068644 is a wasteful number, since it uses less digits than its factorization.

8068644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224139 (or 224134 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 8068644 is about 2840.5358649382. The cubic root of 8068644 is about 200.5704049776.

Subtracting from 8068644 its sum of digits (36), we obtain a palindrome (8068608).

The spelling of 8068644 in words is "eight million, sixty-eight thousand, six hundred forty-four".