724729 has 2 divisors, whose sum is σ = 724730. Its totient is φ = 724728.

The previous prime is 724723. The next prime is 724733. The reversal of 724729 is 927427.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 719104 + 5625 = 848^2 + 75^2 .

It is a cyclic number.

It is not a de Polignac number, because 724729 - 2³ = 724721 is a prime.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 724729.

It is not a weakly prime, because it can be changed into another prime (724721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362364 + 362365.

It is an arithmetic number, because the mean of its divisors is an integer number (362365).

2⁷²⁴⁷²⁹ is an apocalyptic number.

It is an amenable number.

724729 is a deficient number, since it is larger than the sum of its proper divisors (1).

724729 is an equidigital number, since it uses as much as digits as its factorization.

724729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 31.

The square root of 724729 is about 851.3101667430. The cubic root of 724729 is about 89.8238943166.

The spelling of 724729 in words is "seven hundred twenty-four thousand, seven hundred twenty-nine".