80803811 has 4 divisors (see below), whose sum is σ = 88149624. Its totient is φ = 73458000.

The previous prime is 80803781. The next prime is 80803829. The reversal of 80803811 is 11830808.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-80803811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80803841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3672890 + ... + 3672911.

It is an arithmetic number, because the mean of its divisors is an integer number (22037406).

Almost surely, 2^80803811 is an apocalyptic number.

80803811 is a deficient number, since it is larger than the sum of its proper divisors (7345813).

80803811 is a wasteful number, since it uses less digits than its factorization.

80803811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7345812.

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

The square root of 80803811 is about 8989.0940032909. The cubic root of 80803811 is about 432.3252633703.

The spelling of 80803811 in words is "eighty million, eight hundred three thousand, eight hundred eleven".