724369 has 4 divisors (see below), whose sum is σ = 728244. Its totient is φ = 720496.

The previous prime is 724331. The next prime is 724393. The reversal of 724369 is 963427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 659344 + 65025 = 812^2 + 255^2 .

It is a cyclic number.

It is not a de Polignac number, because 724369 - 2⁹ = 723857 is a prime.

It is a super-2 number, since 2×724369² = 1049420896322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 724369.

It is not an unprimeable number, because it can be changed into a prime (724309) 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, 1642 + ... + 2035.

It is an arithmetic number, because the mean of its divisors is an integer number (182061).

2⁷²⁴³⁶⁹ is an apocalyptic number.

It is an amenable number.

724369 is a deficient number, since it is larger than the sum of its proper divisors (3875).

724369 is a wasteful number, since it uses less digits than its factorization.

724369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3874.

The product of its digits is 9072, while the sum is 31.

The square root of 724369 is about 851.0987016792. The cubic root of 724369 is about 89.8090188907.

The spelling of 724369 in words is "seven hundred twenty-four thousand, three hundred sixty-nine".