74822213 has 2 divisors, whose sum is σ = 74822214. Its totient is φ = 74822212.

The previous prime is 74822203. The next prime is 74822221. The reversal of 74822213 is 31222847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57123364 + 17698849 = 7558^2 + 4207^2 .

It is an emirp because it is prime and its reverse (31222847) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74822213 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74822203) 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, 37411106 + 37411107.

It is an arithmetic number, because the mean of its divisors is an integer number (37411107).

Almost surely, 2^74822213 is an apocalyptic number.

It is an amenable number.

74822213 is a deficient number, since it is larger than the sum of its proper divisors (1).

74822213 is an equidigital number, since it uses as much as digits as its factorization.

74822213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 29.

The square root of 74822213 is about 8649.9834103887. The cubic root of 74822213 is about 421.3828437491.

The spelling of 74822213 in words is "seventy-four million, eight hundred twenty-two thousand, two hundred thirteen".