74591243 has 8 divisors (see below), whose sum is σ = 75238800. Its totient is φ = 73946880.

The previous prime is 74591221. The next prime is 74591267. The reversal of 74591243 is 34219547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74591243 - 2¹⁶ = 74525707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74591273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70583 + ... + 71631.

It is an arithmetic number, because the mean of its divisors is an integer number (9404850).

Almost surely, 2^74591243 is an apocalyptic number.

74591243 is a deficient number, since it is larger than the sum of its proper divisors (647557).

74591243 is a wasteful number, since it uses less digits than its factorization.

74591243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597.

The product of its digits is 30240, while the sum is 35.

The square root of 74591243 is about 8636.6221985218. The cubic root of 74591243 is about 420.9488054682.

The spelling of 74591243 in words is "seventy-four million, five hundred ninety-one thousand, two hundred forty-three".