81096806 has 16 divisors (see below), whose sum is σ = 143508480. Its totient is φ = 33634440.

The previous prime is 81096791. The next prime is 81096871. The reversal of 81096806 is 60869018.

It is a self number, because there is not a number n which added to its sum of digits gives 81096806.

It is a congruent number.

It is an unprimeable number.

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, 92996 + ... + 93863.

It is an arithmetic number, because the mean of its divisors is an integer number (8969280).

Almost surely, 2^81096806 is an apocalyptic number.

81096806 is a deficient number, since it is larger than the sum of its proper divisors (62411674).

81096806 is a wasteful number, since it uses less digits than its factorization.

81096806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186899.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 81096806 is about 9005.3765051773. The cubic root of 81096806 is about 432.8471708797.

The spelling of 81096806 in words is "eighty-one million, ninety-six thousand, eight hundred six".