20795911 has 4 divisors (see below), whose sum is σ = 20901672. Its totient is φ = 20690152.

The previous prime is 20795903. The next prime is 20795921. The reversal of 20795911 is 11959702.

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 20795911 - 2³ = 20795903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20795921) 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, 52585 + ... + 52978.

It is an arithmetic number, because the mean of its divisors is an integer number (5225418).

Almost surely, 2^20795911 is an apocalyptic number.

20795911 is a deficient number, since it is larger than the sum of its proper divisors (105761).

20795911 is a wasteful number, since it uses less digits than its factorization.

20795911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105760.

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 20795911 is about 4560.2533920825. The cubic root of 20795911 is about 274.9957508985.

The spelling of 20795911 in words is "twenty million, seven hundred ninety-five thousand, nine hundred eleven".