80816 has 10 divisors (see below), whose sum is σ = 156612. Its totient is φ = 40400.

The previous prime is 80809. The next prime is 80819. The reversal of 80816 is 61808.

It is an Ulam number.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 80791 and 80800.

It is not an unprimeable number, because it can be changed into a prime (80819) by changing a digit.

80816 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2510 + ... + 2541.

2⁸⁰⁸¹⁶ is an apocalyptic number.

It is an amenable number.

80816 is a deficient number, since it is larger than the sum of its proper divisors (75796).

80816 is a wasteful number, since it uses less digits than its factorization.

80816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5059 (or 5053 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 80816 is about 284.2815505797. The cubic root of 80816 is about 43.2347000578.

The spelling of 80816 in words is "eighty thousand, eight hundred sixteen".