20773091 has 2 divisors, whose sum is σ = 20773092. Its totient is φ = 20773090.

The previous prime is 20773079. The next prime is 20773097. The reversal of 20773091 is 19037702.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20773091 - 2¹⁰ = 20772067 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20773097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10386545 + 10386546.

It is an arithmetic number, because the mean of its divisors is an integer number (10386546).

Almost surely, 2^20773091 is an apocalyptic number.

20773091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20773091 is an equidigital number, since it uses as much as digits as its factorization.

20773091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 20773091 is about 4557.7506513630. The cubic root of 20773091 is about 274.8951269532.

The spelling of 20773091 in words is "twenty million, seven hundred seventy-three thousand, ninety-one".