80635 has 4 divisors (see below), whose sum is σ = 96768. Its totient is φ = 64504.

The previous prime is 80629. The next prime is 80651. The reversal of 80635 is 53608.

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 80635 - 2³ = 80627 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8059 + ... + 8068.

It is an arithmetic number, because the mean of its divisors is an integer number (24192).

2⁸⁰⁶³⁵ is an apocalyptic number.

80635 is a deficient number, since it is larger than the sum of its proper divisors (16133).

80635 is a wasteful number, since it uses less digits than its factorization.

80635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16132.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 80635 is about 283.9630257622. The cubic root of 80635 is about 43.2023989866.

It can be divided in two parts, 806 and 35, that added together give a square (841 = 29²).

The spelling of 80635 in words is "eighty thousand, six hundred thirty-five".