74247343 has 2 divisors, whose sum is σ = 74247344. Its totient is φ = 74247342.

The previous prime is 74247331. The next prime is 74247353. The reversal of 74247343 is 34374247.

It is a strong prime.

It is an emirp because it is prime and its reverse (34374247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74247343 - 2²¹ = 72150191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74247299 and 74247308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74247353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37123671 + 37123672.

It is an arithmetic number, because the mean of its divisors is an integer number (37123672).

Almost surely, 2^74247343 is an apocalyptic number.

74247343 is a deficient number, since it is larger than the sum of its proper divisors (1).

74247343 is an equidigital number, since it uses as much as digits as its factorization.

74247343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 34.

The square root of 74247343 is about 8616.6897936505. The cubic root of 74247343 is about 420.3008860580.

The spelling of 74247343 in words is "seventy-four million, two hundred forty-seven thousand, three hundred forty-three".