724042663 has 4 divisors (see below), whose sum is σ = 733207840. Its totient is φ = 714877488.

The previous prime is 724042651. The next prime is 724042667. The reversal of 724042663 is 366240427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366240427 = 7 ⋅52320061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724042663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724042667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4582470 + ... + 4582627.

It is an arithmetic number, because the mean of its divisors is an integer number (183301960).

Almost surely, 2^724042663 is an apocalyptic number.

724042663 is a deficient number, since it is larger than the sum of its proper divisors (9165177).

724042663 is an equidigital number, since it uses as much as digits as its factorization.

724042663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9165176.

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 724042663 is about 26908.0408614228. The cubic root of 724042663 is about 897.9553018163.

The spelling of 724042663 in words is "seven hundred twenty-four million, forty-two thousand, six hundred sixty-three".