80605 has 16 divisors (see below), whose sum is σ = 115200. Its totient is φ = 54096.

The previous prime is 80603. The next prime is 80611. The reversal of 80605 is 50608.

It is not a de Polignac number, because 80605 - 2¹ = 80603 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1692 + ... + 1738.

It is an arithmetic number, because the mean of its divisors is an integer number (7200).

2⁸⁰⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

80605 is a deficient number, since it is larger than the sum of its proper divisors (34595).

80605 is an equidigital number, since it uses as much as digits as its factorization.

80605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 59 counting only the distinct ones).

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

The square root of 80605 is about 283.9101970694. The cubic root of 80605 is about 43.1970405494.

It can be divided in two parts, 80 and 605, that multiplied together give a square (48400 = 220²).

The spelling of 80605 in words is "eighty thousand, six hundred five".