81096704 has 52 divisors (see below), whose sum is σ = 174763176. Its totient is φ = 37404672.

The previous prime is 81096683. The next prime is 81096721. The reversal of 81096704 is 40769018.

It is a tau number, because it is divible by the number of its divisors (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52487 + ... + 54009.

Almost surely, 2^81096704 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 81096704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87381588).

81096704 is an abundant number, since it is smaller than the sum of its proper divisors (93666472).

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

81096704 is a wasteful number, since it uses less digits than its factorization.

81096704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560 (or 1538 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 81096704 is about 9005.3708418921. The cubic root of 81096704 is about 432.8469894075.

The spelling of 81096704 in words is "eighty-one million, ninety-six thousand, seven hundred four".