80820903 has 4 divisors (see below), whose sum is σ = 107761208. Its totient is φ = 53880600.

The previous prime is 80820869. The next prime is 80820911. The reversal of 80820903 is 30902808.

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

It is not a de Polignac number, because 80820903 - 2⁸ = 80820647 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 (80820923) 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, 13470148 + ... + 13470153.

It is an arithmetic number, because the mean of its divisors is an integer number (26940302).

Almost surely, 2^80820903 is an apocalyptic number.

80820903 is a deficient number, since it is larger than the sum of its proper divisors (26940305).

80820903 is a wasteful number, since it uses less digits than its factorization.

80820903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26940304.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 80820903 is about 8990.0446606232. The cubic root of 80820903 is about 432.3557437084.

The spelling of 80820903 in words is "eighty million, eight hundred twenty thousand, nine hundred three".