74731657317 has 8 divisors (see below), whose sum is σ = 101959470624. Its totient is φ = 48662474448.

The previous prime is 74731657237. The next prime is 74731657333. The reversal of 74731657317 is 71375613747.

It is a happy number.

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

It is not a de Polignac number, because 74731657317 - 2²⁴ = 74714880101 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 74731657317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74731657367) 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 7 ways as a sum of consecutive naturals, for example, 289657458 + ... + 289657715.

It is an arithmetic number, because the mean of its divisors is an integer number (12744933828).

Almost surely, 2^74731657317 is an apocalyptic number.

It is an amenable number.

74731657317 is a deficient number, since it is larger than the sum of its proper divisors (27227813307).

74731657317 is a wasteful number, since it uses less digits than its factorization.

74731657317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579315219.

The product of its digits is 2593080, while the sum is 51.

The spelling of 74731657317 in words is "seventy-four billion, seven hundred thirty-one million, six hundred fifty-seven thousand, three hundred seventeen".