74445593 has 2 divisors, whose sum is σ = 74445594. Its totient is φ = 74445592.

The previous prime is 74445589. The next prime is 74445647. The reversal of 74445593 is 39554447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68029504 + 6416089 = 8248^2 + 2533^2 .

It is a cyclic number.

It is not a de Polignac number, because 74445593 - 2² = 74445589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74445593.

It is not a weakly prime, because it can be changed into another prime (74445493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37222796 + 37222797.

It is an arithmetic number, because the mean of its divisors is an integer number (37222797).

Almost surely, 2^74445593 is an apocalyptic number.

It is an amenable number.

74445593 is a deficient number, since it is larger than the sum of its proper divisors (1).

74445593 is an equidigital number, since it uses as much as digits as its factorization.

74445593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 41.

The square root of 74445593 is about 8628.1859622982. The cubic root of 74445593 is about 420.6746394908.

The spelling of 74445593 in words is "seventy-four million, four hundred forty-five thousand, five hundred ninety-three".