724433641 has 2 divisors, whose sum is σ = 724433642. Its totient is φ = 724433640.

The previous prime is 724433587. The next prime is 724433657. The reversal of 724433641 is 146334427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 590684416 + 133749225 = 24304^2 + 11565^2 .

It is an emirp because it is prime and its reverse (146334427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 724433641 - 2²⁹ = 187562729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 724433597 and 724433606.

It is not a weakly prime, because it can be changed into another prime (724433041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362216820 + 362216821.

It is an arithmetic number, because the mean of its divisors is an integer number (362216821).

Almost surely, 2^724433641 is an apocalyptic number.

It is an amenable number.

724433641 is a deficient number, since it is larger than the sum of its proper divisors (1).

724433641 is an equidigital number, since it uses as much as digits as its factorization.

724433641 is an odious number, because the sum of its binary digits is odd.

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

The square root of 724433641 is about 26915.3049583318. The cubic root of 724433641 is about 898.1169026037.

The spelling of 724433641 in words is "seven hundred twenty-four million, four hundred thirty-three thousand, six hundred forty-one".