20795 has 4 divisors (see below), whose sum is σ = 24960. Its totient is φ = 16632.

The previous prime is 20789. The next prime is 20807. The reversal of 20795 is 59702.

20795 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59702 = 2 ⋅29851.

It is a cyclic number.

It is not a de Polignac number, because 20795 - 2⁶ = 20731 is a prime.

20795 is strictly pandigital in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 20795.

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, 2075 + ... + 2084.

It is an arithmetic number, because the mean of its divisors is an integer number (6240).

2²⁰⁷⁹⁵ is an apocalyptic number.

20795 is a deficient number, since it is larger than the sum of its proper divisors (4165).

20795 is an equidigital number, since it uses as much as digits as its factorization.

20795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4164.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 20795 is about 144.2047155956. The cubic root of 20795 is about 27.4991735289.

The spelling of 20795 in words is "twenty thousand, seven hundred ninety-five".