20794747 has 2 divisors, whose sum is σ = 20794748. Its totient is φ = 20794746.

The previous prime is 20794699. The next prime is 20794771. The reversal of 20794747 is 74749702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20794747 - 2⁷ = 20794619 is a prime.

It is not a weakly prime, because it can be changed into another prime (20794447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10397373 + 10397374.

It is an arithmetic number, because the mean of its divisors is an integer number (10397374).

Almost surely, 2^20794747 is an apocalyptic number.

20794747 is a deficient number, since it is larger than the sum of its proper divisors (1).

20794747 is an equidigital number, since it uses as much as digits as its factorization.

20794747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 20794747 is about 4560.1257658095. The cubic root of 20794747 is about 274.9906200657.

The spelling of 20794747 in words is "twenty million, seven hundred ninety-four thousand, seven hundred forty-seven".