74944817 has 2 divisors, whose sum is σ = 74944818. Its totient is φ = 74944816.

The previous prime is 74944781. The next prime is 74944847. The reversal of 74944817 is 71844947.

Together with previous prime (74944781) 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., 54523456 + 20421361 = 7384^2 + 4519^2 .

It is a cyclic number.

It is not a de Polignac number, because 74944817 - 2⁸ = 74944561 is a prime.

It is not a weakly prime, because it can be changed into another prime (74944847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37472408 + 37472409.

It is an arithmetic number, because the mean of its divisors is an integer number (37472409).

Almost surely, 2^74944817 is an apocalyptic number.

It is an amenable number.

74944817 is a deficient number, since it is larger than the sum of its proper divisors (1).

74944817 is an equidigital number, since it uses as much as digits as its factorization.

74944817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 44.

The square root of 74944817 is about 8657.0674595962. The cubic root of 74944817 is about 421.6128780631.

The spelling of 74944817 in words is "seventy-four million, nine hundred forty-four thousand, eight hundred seventeen".