74635243 has 4 divisors (see below), whose sum is σ = 75320080. Its totient is φ = 73950408.

The previous prime is 74635237. The next prime is 74635247. The reversal of 74635243 is 34253647.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74635243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74635199 and 74635208.

It is not an unprimeable number, because it can be changed into a prime (74635247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342255 + ... + 342472.

It is an arithmetic number, because the mean of its divisors is an integer number (18830020).

Almost surely, 2^74635243 is an apocalyptic number.

74635243 is a deficient number, since it is larger than the sum of its proper divisors (684837).

74635243 is a wasteful number, since it uses less digits than its factorization.

74635243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684836.

The product of its digits is 60480, while the sum is 34.

The square root of 74635243 is about 8639.1691151406. The cubic root of 74635243 is about 421.0315591803.

The spelling of 74635243 in words is "seventy-four million, six hundred thirty-five thousand, two hundred forty-three".