20794771 has 2 divisors, whose sum is σ = 20794772. Its totient is φ = 20794770.

The previous prime is 20794747. The next prime is 20794847. The reversal of 20794771 is 17749702.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20794771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20794771.

It is not a weakly prime, because it can be changed into another prime (20794471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10397385 + 10397386.

It is an arithmetic number, because the mean of its divisors is an integer number (10397386).

Almost surely, 2^20794771 is an apocalyptic number.

20794771 is a deficient number, since it is larger than the sum of its proper divisors (1).

20794771 is an equidigital number, since it uses as much as digits as its factorization.

20794771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 20794771 is about 4560.1283973151. The cubic root of 20794771 is about 274.9907258580.

The spelling of 20794771 in words is "twenty million, seven hundred ninety-four thousand, seven hundred seventy-one".