80865803 has 4 divisors (see below), whose sum is σ = 82586400. Its totient is φ = 79145208.

The previous prime is 80865797. The next prime is 80865857. The reversal of 80865803 is 30856808.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80865803 - 2⁶ = 80865739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80865203) 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 3 ways as a sum of consecutive naturals, for example, 860228 + ... + 860321.

It is an arithmetic number, because the mean of its divisors is an integer number (20646600).

Almost surely, 2^80865803 is an apocalyptic number.

80865803 is a deficient number, since it is larger than the sum of its proper divisors (1720597).

80865803 is a wasteful number, since it uses less digits than its factorization.

80865803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720596.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 80865803 is about 8992.5415206158. The cubic root of 80865803 is about 432.4357938702.

The spelling of 80865803 in words is "eighty million, eight hundred sixty-five thousand, eight hundred three".