20670711 has 4 divisors (see below), whose sum is σ = 27560952. Its totient is φ = 13780472.

The previous prime is 20670701. The next prime is 20670719. The reversal of 20670711 is 11707602.

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 20670711 - 2¹⁴ = 20654327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20670719) 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, 3445116 + ... + 3445121.

It is an arithmetic number, because the mean of its divisors is an integer number (6890238).

Almost surely, 2^20670711 is an apocalyptic number.

20670711 is a deficient number, since it is larger than the sum of its proper divisors (6890241).

20670711 is an equidigital number, since it uses as much as digits as its factorization.

20670711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890240.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 20670711 is about 4546.5053612637. The cubic root of 20670711 is about 274.4427769147.

The spelling of 20670711 in words is "twenty million, six hundred seventy thousand, seven hundred eleven".