81804703 has 8 divisors (see below), whose sum is σ = 82654560. Its totient is φ = 80959200.

The previous prime is 81804689. The next prime is 81804707. The reversal of 81804703 is 30740818.

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 a de Polignac number, because none of the positive numbers 2^k-81804703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81804707) 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, 47013 + ... + 48721.

It is an arithmetic number, because the mean of its divisors is an integer number (10331820).

Almost surely, 2^81804703 is an apocalyptic number.

81804703 is a deficient number, since it is larger than the sum of its proper divisors (849857).

81804703 is a wasteful number, since it uses less digits than its factorization.

81804703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 81804703 is about 9044.5952369357. The cubic root of 81804703 is about 434.1029702513.

The spelling of 81804703 in words is "eighty-one million, eight hundred four thousand, seven hundred three".