74090643 has 8 divisors (see below), whose sum is σ = 107768256. Its totient is φ = 44903400.

The previous prime is 74090629. The next prime is 74090669. The reversal of 74090643 is 34609047.

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

It is not a de Polignac number, because 74090643 - 2¹⁰ = 74089619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2245171 = 74090643 / (7 + 4 + 0 + 9 + 0 + 6 + 4 + 3).

It is not an unprimeable number, because it can be changed into a prime (74090623) 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, 1122553 + ... + 1122618.

It is an arithmetic number, because the mean of its divisors is an integer number (13471032).

Almost surely, 2^74090643 is an apocalyptic number.

74090643 is a deficient number, since it is larger than the sum of its proper divisors (33677613).

74090643 is a wasteful number, since it uses less digits than its factorization.

74090643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245185.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 74090643 is about 8607.5921720305. The cubic root of 74090643 is about 420.0049942717.

The spelling of 74090643 in words is "seventy-four million, ninety thousand, six hundred forty-three".