724791 has 4 divisors (see below), whose sum is σ = 966392. Its totient is φ = 483192.

The previous prime is 724783. The next prime is 724807. The reversal of 724791 is 197427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 197427 = 3 ⋅65809.

It is not a de Polignac number, because 724791 - 2³ = 724783 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120796 + ... + 120801.

It is an arithmetic number, because the mean of its divisors is an integer number (241598).

2⁷²⁴⁷⁹¹ is an apocalyptic number.

724791 is a deficient number, since it is larger than the sum of its proper divisors (241601).

724791 is a wasteful number, since it uses less digits than its factorization.

724791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241600.

The product of its digits is 3528, while the sum is 30.

The square root of 724791 is about 851.3465804242. The cubic root of 724791 is about 89.8264556983.

The spelling of 724791 in words is "seven hundred twenty-four thousand, seven hundred ninety-one".