74791 has 4 divisors (see below), whose sum is σ = 77400. Its totient is φ = 72184.

The previous prime is 74779. The next prime is 74797. The reversal of 74791 is 19747.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74791 - 2⁵ = 74759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1261 + ... + 1318.

It is an arithmetic number, because the mean of its divisors is an integer number (19350).

2⁷⁴⁷⁹¹ is an apocalyptic number.

74791 is a deficient number, since it is larger than the sum of its proper divisors (2609).

74791 is a wasteful number, since it uses less digits than its factorization.

74791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608.

The product of its digits is 1764, while the sum is 28.

The square root of 74791 is about 273.4794324990. The cubic root of 74791 is about 42.1324240599.

It can be divided in two parts, 747 and 91, that added together give a palindrome (838).

The spelling of 74791 in words is "seventy-four thousand, seven hundred ninety-one".