13220773 has 2 divisors, whose sum is σ = 13220774. Its totient is φ = 13220772.

The previous prime is 13220749. The next prime is 13220843. The reversal of 13220773 is 37702231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8054244 + 5166529 = 2838^2 + 2273^2 .

It is a cyclic number.

It is not a de Polignac number, because 13220773 - 2⁵ = 13220741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13220873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610386 + 6610387.

It is an arithmetic number, because the mean of its divisors is an integer number (6610387).

Almost surely, 2^13220773 is an apocalyptic number.

It is an amenable number.

13220773 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220773 is an equidigital number, since it uses as much as digits as its factorization.

13220773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 13220773 is about 3636.0380911096. The cubic root of 13220773 is about 236.4570585651.

The spelling of 13220773 in words is "thirteen million, two hundred twenty thousand, seven hundred seventy-three".