34805 has 4 divisors (see below), whose sum is σ = 41772. Its totient is φ = 27840.

The previous prime is 34781. The next prime is 34807. The reversal of 34805 is 50843.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50843 = 13 ⋅3911.

It can be written as a sum of positive squares in 2 ways, for example, as 20164 + 14641 = 142^2 + 121^2 .

It is not a de Polignac number, because 34805 - 2⁸ = 34549 is a prime.

It is a super-2 number, since 2×34805² = 2422776050, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 34805.

It is not an unprimeable number, because it can be changed into a prime (34807) 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, 3476 + ... + 3485.

It is an arithmetic number, because the mean of its divisors is an integer number (10443).

2³⁴⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

34805 is a deficient number, since it is larger than the sum of its proper divisors (6967).

34805 is an equidigital number, since it uses as much as digits as its factorization.

34805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6966.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 34805 is about 186.5609819871. The cubic root of 34805 is about 32.6498015586.

The spelling of 34805 in words is "thirty-four thousand, eight hundred five".