74304561 has 8 divisors (see below), whose sum is σ = 99295200. Its totient is φ = 49425152.

The previous prime is 74304557. The next prime is 74304577. The reversal of 74304561 is 16540347.

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 74304561 - 2² = 74304557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74304521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26235 + ... + 28928.

It is an arithmetic number, because the mean of its divisors is an integer number (12411900).

Almost surely, 2^74304561 is an apocalyptic number.

It is an amenable number.

74304561 is a deficient number, since it is larger than the sum of its proper divisors (24990639).

74304561 is a wasteful number, since it uses less digits than its factorization.

74304561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55615.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 74304561 is about 8620.0093387420. The cubic root of 74304561 is about 420.4088252790.

The spelling of 74304561 in words is "seventy-four million, three hundred four thousand, five hundred sixty-one".