724481 has 2 divisors, whose sum is σ = 724482. Its totient is φ = 724480.

The previous prime is 724469. The next prime is 724487. The reversal of 724481 is 184427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 410881 + 313600 = 641^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 724481 - 2¹⁸ = 462337 is a prime.

It is a super-2 number, since 2×724481² = 1049745438722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 724481.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 724481.

It is not a weakly prime, because it can be changed into another prime (724487) 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 as a sum of consecutive naturals, namely, 362240 + 362241.

It is an arithmetic number, because the mean of its divisors is an integer number (362241).

2⁷²⁴⁴⁸¹ is an apocalyptic number.

It is an amenable number.

724481 is a deficient number, since it is larger than the sum of its proper divisors (1).

724481 is an equidigital number, since it uses as much as digits as its factorization.

724481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792, while the sum is 26.

The square root of 724481 is about 851.1644964400. The cubic root of 724481 is about 89.8136473290.

The spelling of 724481 in words is "seven hundred twenty-four thousand, four hundred eighty-one".