71862773 has 2 divisors, whose sum is σ = 71862774. Its totient is φ = 71862772.

The previous prime is 71862737. The next prime is 71862779. The reversal of 71862773 is 37726817.

Together with previous prime (71862737) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53260804 + 18601969 = 7298^2 + 4313^2 .

It is a cyclic number.

It is not a de Polignac number, because 71862773 - 2¹⁸ = 71600629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71862773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71862779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35931386 + 35931387.

It is an arithmetic number, because the mean of its divisors is an integer number (35931387).

Almost surely, 2^71862773 is an apocalyptic number.

It is an amenable number.

71862773 is a deficient number, since it is larger than the sum of its proper divisors (1).

71862773 is an equidigital number, since it uses as much as digits as its factorization.

71862773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 41.

The square root of 71862773 is about 8477.1913391170. The cubic root of 71862773 is about 415.7522968323.

The spelling of 71862773 in words is "seventy-one million, eight hundred sixty-two thousand, seven hundred seventy-three".