81108803 has 8 divisors (see below), whose sum is σ = 83920896. Its totient is φ = 78309000.

The previous prime is 81108799. The next prime is 81108827. The reversal of 81108803 is 30880118.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81108803 - 2² = 81108799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81108883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11528 + ... + 17178.

It is an arithmetic number, because the mean of its divisors is an integer number (10490112).

Almost surely, 2^81108803 is an apocalyptic number.

81108803 is a deficient number, since it is larger than the sum of its proper divisors (2812093).

81108803 is a wasteful number, since it uses less digits than its factorization.

81108803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6145.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 81108803 is about 9006.0425826220. The cubic root of 81108803 is about 432.8685141430.

The spelling of 81108803 in words is "eighty-one million, one hundred eight thousand, eight hundred three".