74609543 has 2 divisors, whose sum is σ = 74609544. Its totient is φ = 74609542.

The previous prime is 74609473. The next prime is 74609581. The reversal of 74609543 is 34590647.

It is an a-pointer prime, because the next prime (74609581) can be obtained adding 74609543 to its sum of digits (38).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74609543 - 2⁸ = 74609287 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74609497 and 74609506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74609443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37304771 + 37304772.

It is an arithmetic number, because the mean of its divisors is an integer number (37304772).

Almost surely, 2^74609543 is an apocalyptic number.

74609543 is a deficient number, since it is larger than the sum of its proper divisors (1).

74609543 is an equidigital number, since it uses as much as digits as its factorization.

74609543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 74609543 is about 8637.6815755155. The cubic root of 74609543 is about 420.9832274412.

The spelling of 74609543 in words is "seventy-four million, six hundred nine thousand, five hundred forty-three".