8181696 has 56 divisors (see below), whose sum is σ = 22173184. Its totient is φ = 2661120.

The previous prime is 8181637. The next prime is 8181697. The reversal of 8181696 is 6961818.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8181697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7761 + ... + 8751.

Almost surely, 2^8181696 is an apocalyptic number.

8181696 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8181696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11086592).

8181696 is an abundant number, since it is smaller than the sum of its proper divisors (13991488).

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

8181696 is a wasteful number, since it uses less digits than its factorization.

8181696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1039 counting only the distinct ones).

The product of its digits is 20736, while the sum is 39.

The square root of 8181696 is about 2860.3664100950. The cubic root of 8181696 is about 201.5028128180.

The spelling of 8181696 in words is "eight million, one hundred eighty-one thousand, six hundred ninety-six".