80506 has 4 divisors (see below), whose sum is σ = 120762. Its totient is φ = 40252.

The previous prime is 80491. The next prime is 80513. The reversal of 80506 is 60508.

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

It can be written as a sum of positive squares in only one way, i.e., 55225 + 25281 = 235^2 + 159^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20125 + ... + 20128.

2⁸⁰⁵⁰⁶ is an apocalyptic number.

80506 is a deficient number, since it is larger than the sum of its proper divisors (40256).

80506 is a wasteful number, since it uses less digits than its factorization.

80506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40255.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 80506 is about 283.7357925959. The cubic root of 80506 is about 43.1793482680.

The spelling of 80506 in words is "eighty thousand, five hundred six".