724071749 has 2 divisors, whose sum is σ = 724071750. Its totient is φ = 724071748.

The previous prime is 724071709. The next prime is 724071773. The reversal of 724071749 is 947170427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 629106724 + 94965025 = 25082^2 + 9745^2 .

It is a cyclic number.

It is not a de Polignac number, because 724071749 - 2⁸ = 724071493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724071709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362035874 + 362035875.

It is an arithmetic number, because the mean of its divisors is an integer number (362035875).

Almost surely, 2^724071749 is an apocalyptic number.

It is an amenable number.

724071749 is a deficient number, since it is larger than the sum of its proper divisors (1).

724071749 is an equidigital number, since it uses as much as digits as its factorization.

724071749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 724071749 is about 26908.5813264096. The cubic root of 724071749 is about 897.9673257755.

The spelling of 724071749 in words is "seven hundred twenty-four million, seventy-one thousand, seven hundred forty-nine".