74073561 has 8 divisors (see below), whose sum is σ = 98829024. Its totient is φ = 49350240.

The previous prime is 74073523. The next prime is 74073613. The reversal of 74073561 is 16537047.

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

It is a de Polignac number, because none of the positive numbers 2^k-74073561 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (74073521) 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, 2011 + ... + 12336.

It is an arithmetic number, because the mean of its divisors is an integer number (12353628).

Almost surely, 2^74073561 is an apocalyptic number.

It is an amenable number.

74073561 is a deficient number, since it is larger than the sum of its proper divisors (24755463).

74073561 is a wasteful number, since it uses less digits than its factorization.

74073561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16071.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 74073561 is about 8606.5998512769. The cubic root of 74073561 is about 419.9727136468.

The spelling of 74073561 in words is "seventy-four million, seventy-three thousand, five hundred sixty-one".