73566943 has 2 divisors, whose sum is σ = 73566944. Its totient is φ = 73566942.

The previous prime is 73566919. The next prime is 73566947. The reversal of 73566943 is 34966537.

It is a strong prime.

It is an emirp because it is prime and its reverse (34966537) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73566943 - 2⁹ = 73566431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73566943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73566947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36783471 + 36783472.

It is an arithmetic number, because the mean of its divisors is an integer number (36783472).

Almost surely, 2^73566943 is an apocalyptic number.

73566943 is a deficient number, since it is larger than the sum of its proper divisors (1).

73566943 is an equidigital number, since it uses as much as digits as its factorization.

73566943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 43.

The square root of 73566943 is about 8577.1174062152. The cubic root of 73566943 is about 419.0130700730.

The spelling of 73566943 in words is "seventy-three million, five hundred sixty-six thousand, nine hundred forty-three".