724740013 has 2 divisors, whose sum is σ = 724740014. Its totient is φ = 724740012.

The previous prime is 724740007. The next prime is 724740101. The reversal of 724740013 is 310047427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 440244324 + 284495689 = 20982^2 + 16867^2 .

It is a cyclic number.

It is not a de Polignac number, because 724740013 - 2²¹ = 722642861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724741013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362370006 + 362370007.

It is an arithmetic number, because the mean of its divisors is an integer number (362370007).

Almost surely, 2^724740013 is an apocalyptic number.

It is an amenable number.

724740013 is a deficient number, since it is larger than the sum of its proper divisors (1).

724740013 is an equidigital number, since it uses as much as digits as its factorization.

724740013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 724740013 is about 26920.9957653873. The cubic root of 724740013 is about 898.2434930305.

The spelling of 724740013 in words is "seven hundred twenty-four million, seven hundred forty thousand, thirteen".