73791 has 10 divisors (see below), whose sum is σ = 110352. Its totient is φ = 49140.

The previous prime is 73783. The next prime is 73819. The reversal of 73791 is 19737.

Added to its reverse (19737) it gives a triangular number (93528 = T₄₃₂).

It is not a de Polignac number, because 73791 - 2³ = 73783 is a prime.

It is a super-2 number, since 2×73791² = 10890223362, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73721) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 375 + ... + 536.

2⁷³⁷⁹¹ is an apocalyptic number.

73791 is a deficient number, since it is larger than the sum of its proper divisors (36561).

73791 is an equidigital number, since it uses as much as digits as its factorization.

73791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 914 counting only the distinct ones).

The product of its digits is 1323, while the sum is 27.

The square root of 73791 is about 271.6449889102. The cubic root of 73791 is about 41.9438023900.

Adding to 73791 its reverse (19737), we get a triangular number (93528 = T₄₃₂).

It can be divided in two parts, 737 and 91, that added together give a palindrome (828).

The spelling of 73791 in words is "seventy-three thousand, seven hundred ninety-one".