724075493 has 2 divisors, whose sum is σ = 724075494. Its totient is φ = 724075492.

The previous prime is 724075439. The next prime is 724075501. The reversal of 724075493 is 394570427.

Together with previous prime (724075439) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 460402849 + 263672644 = 21457^2 + 16238^2 .

It is an emirp because it is prime and its reverse (394570427) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724075493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 724075493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724075423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362037746 + 362037747.

It is an arithmetic number, because the mean of its divisors is an integer number (362037747).

Almost surely, 2^724075493 is an apocalyptic number.

It is an amenable number.

724075493 is a deficient number, since it is larger than the sum of its proper divisors (1).

724075493 is an equidigital number, since it uses as much as digits as its factorization.

724075493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 724075493 is about 26908.6508952047. The cubic root of 724075493 is about 897.9688734968.

The spelling of 724075493 in words is "seven hundred twenty-four million, seventy-five thousand, four hundred ninety-three".