724417 has 4 divisors (see below), whose sum is σ = 727380. Its totient is φ = 721456.

The previous prime is 724403. The next prime is 724433. The reversal of 724417 is 714427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 714427 = 7 ⋅102061.

It can be written as a sum of positive squares in 2 ways, for example, as 152881 + 571536 = 391^2 + 756^2 .

It is a cyclic number.

It is not a de Polignac number, because 724417 - 2¹¹ = 722369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 724391 and 724400.

It is not an unprimeable number, because it can be changed into a prime (724447) 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, 1078 + ... + 1615.

It is an arithmetic number, because the mean of its divisors is an integer number (181845).

2⁷²⁴⁴¹⁷ is an apocalyptic number.

It is an amenable number.

724417 is a deficient number, since it is larger than the sum of its proper divisors (2963).

724417 is a wasteful number, since it uses less digits than its factorization.

724417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962.

The product of its digits is 1568, while the sum is 25.

The square root of 724417 is about 851.1269000566. The cubic root of 724417 is about 89.8110025655.

It can be divided in two parts, 72 and 4417, that added together give a square (4489 = 67²).

The spelling of 724417 in words is "seven hundred twenty-four thousand, four hundred seventeen", and thus it is an iban number.