20056711 has 4 divisors (see below), whose sum is σ = 20065672. Its totient is φ = 20047752.

The previous prime is 20056703. The next prime is 20056769. The reversal of 20056711 is 11765002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 11765002 = 2 ⋅5882501.

It is a cyclic number.

It is not a de Polignac number, because 20056711 - 2³ = 20056703 is a prime.

It is a super-2 number, since 2×20056711² = 804543312275042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20056781) 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, 2065 + ... + 6661.

It is an arithmetic number, because the mean of its divisors is an integer number (5016418).

Almost surely, 2^20056711 is an apocalyptic number.

20056711 is a deficient number, since it is larger than the sum of its proper divisors (8961).

20056711 is an equidigital number, since it uses as much as digits as its factorization.

20056711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8960.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 20056711 is about 4478.4719492255. The cubic root of 20056711 is about 271.6980817715.

The spelling of 20056711 in words is "twenty million, fifty-six thousand, seven hundred eleven".