8681144 has 8 divisors (see below), whose sum is σ = 16277160. Its totient is φ = 4340568.

The previous prime is 8681131. The next prime is 8681159. The reversal of 8681144 is 4411868.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×8681144² = 150724522297472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8681144.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 542564 + ... + 542579.

It is an arithmetic number, because the mean of its divisors is an integer number (2034645).

Almost surely, 2^8681144 is an apocalyptic number.

It is an amenable number.

8681144 is a deficient number, since it is larger than the sum of its proper divisors (7596016).

8681144 is a wasteful number, since it uses less digits than its factorization.

8681144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085149 (or 1085145 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 8681144 is about 2946.3781155853. The cubic root of 8681144 is about 205.5223166881.

The spelling of 8681144 in words is "eight million, six hundred eighty-one thousand, one hundred forty-four".