71444773 has 2 divisors, whose sum is σ = 71444774. Its totient is φ = 71444772.

The previous prime is 71444759. The next prime is 71444783. The reversal of 71444773 is 37744417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50951044 + 20493729 = 7138^2 + 4527^2 .

It is an emirp because it is prime and its reverse (37744417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71444773 - 2⁵ = 71444741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71444753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35722386 + 35722387.

It is an arithmetic number, because the mean of its divisors is an integer number (35722387).

Almost surely, 2^71444773 is an apocalyptic number.

It is an amenable number.

71444773 is a deficient number, since it is larger than the sum of its proper divisors (1).

71444773 is an equidigital number, since it uses as much as digits as its factorization.

71444773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65856, while the sum is 37.

The square root of 71444773 is about 8452.5009908311. The cubic root of 71444773 is about 414.9446347972.

The spelling of 71444773 in words is "seventy-one million, four hundred forty-four thousand, seven hundred seventy-three".