578791 has 4 divisors (see below), whose sum is σ = 594472. Its totient is φ = 563112.

The previous prime is 578789. The next prime is 578803. The reversal of 578791 is 197875.

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 578791 - 2¹ = 578789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 15643 = 578791 / (5 + 7 + 8 + 7 + 9 + 1).

It is a Duffinian number.

578791 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 578791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (578701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7785 + ... + 7858.

It is an arithmetic number, because the mean of its divisors is an integer number (148618).

2⁵⁷⁸⁷⁹¹ is an apocalyptic number.

578791 is a deficient number, since it is larger than the sum of its proper divisors (15681).

578791 is a wasteful number, since it uses less digits than its factorization.

578791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15680.

The product of its digits is 17640, while the sum is 37.

The square root of 578791 is about 760.7831491299. The cubic root of 578791 is about 83.3375233449.

It can be divided in two parts, 578 and 791, that added together give a square (1369 = 37²).

The spelling of 578791 in words is "five hundred seventy-eight thousand, seven hundred ninety-one".