724769 has 2 divisors, whose sum is σ = 724770. Its totient is φ = 724768.

The previous prime is 724751. The next prime is 724777. The reversal of 724769 is 967427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 555025 + 169744 = 745^2 + 412^2 .

It is an emirp because it is prime and its reverse (967427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 724769 - 2⁸ = 724513 is a prime.

It is a super-2 number, since 2×724769² = 1050580206722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (724729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362384 + 362385.

It is an arithmetic number, because the mean of its divisors is an integer number (362385).

2⁷²⁴⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

724769 is a deficient number, since it is larger than the sum of its proper divisors (1).

724769 is an equidigital number, since it uses as much as digits as its factorization.

724769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 724769 is about 851.3336596188. Note that the first 3 decimals coincide. The cubic root of 724769 is about 89.8255468376.

The spelling of 724769 in words is "seven hundred twenty-four thousand, seven hundred sixty-nine".