80640803 has 4 divisors (see below), whose sum is σ = 81229560. Its totient is φ = 80052048.

The previous prime is 80640799. The next prime is 80640811. The reversal of 80640803 is 30804608.

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 80640803 - 2² = 80640799 is a prime.

It is a super-3 number, since 3×80640803³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80640823) 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, 294173 + ... + 294446.

It is an arithmetic number, because the mean of its divisors is an integer number (20307390).

Almost surely, 2^80640803 is an apocalyptic number.

80640803 is a deficient number, since it is larger than the sum of its proper divisors (588757).

80640803 is a wasteful number, since it uses less digits than its factorization.

80640803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588756.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 80640803 is about 8980.0224387247. The cubic root of 80640803 is about 432.0343533352.

The spelling of 80640803 in words is "eighty million, six hundred forty thousand, eight hundred three".