724046993 has 2 divisors, whose sum is σ = 724046994. Its totient is φ = 724046992.

The previous prime is 724046987. The next prime is 724047011. The reversal of 724046993 is 399640427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 390181009 + 333865984 = 19753^2 + 18272^2 .

It is an emirp because it is prime and its reverse (399640427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 724046993 - 2¹⁰ = 724045969 is a prime.

It is not a weakly prime, because it can be changed into another prime (724046293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362023496 + 362023497.

It is an arithmetic number, because the mean of its divisors is an integer number (362023497).

Almost surely, 2^724046993 is an apocalyptic number.

It is an amenable number.

724046993 is a deficient number, since it is larger than the sum of its proper divisors (1).

724046993 is an equidigital number, since it uses as much as digits as its factorization.

724046993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 724046993 is about 26908.1213205233. The cubic root of 724046993 is about 897.9570918300.

It can be divided in two parts, 72404 and 6993, that added together give a palindrome (79397).

The spelling of 724046993 in words is "seven hundred twenty-four million, forty-six thousand, nine hundred ninety-three".