20791411 has 2 divisors, whose sum is σ = 20791412. Its totient is φ = 20791410.

The previous prime is 20791409. The next prime is 20791451. The reversal of 20791411 is 11419702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20791411 - 2¹ = 20791409 is a prime.

Together with 20791409, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20791451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10395705 + 10395706.

It is an arithmetic number, because the mean of its divisors is an integer number (10395706).

Almost surely, 2^20791411 is an apocalyptic number.

20791411 is a deficient number, since it is larger than the sum of its proper divisors (1).

20791411 is an equidigital number, since it uses as much as digits as its factorization.

20791411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 20791411 is about 4559.7599717529. The cubic root of 20791411 is about 274.9759141439.

The spelling of 20791411 in words is "twenty million, seven hundred ninety-one thousand, four hundred eleven".