724765901 has 2 divisors, whose sum is σ = 724765902. Its totient is φ = 724765900.

The previous prime is 724765889. The next prime is 724765919. The reversal of 724765901 is 109567427.

724765901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 621255625 + 103510276 = 24925^2 + 10174^2 .

It is an emirp because it is prime and its reverse (109567427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 724765901 - 2²⁶ = 657657037 is a prime.

It is a super-2 number, since 2×724765901² = 1050571222504683602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724765931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362382950 + 362382951.

It is an arithmetic number, because the mean of its divisors is an integer number (362382951).

Almost surely, 2^724765901 is an apocalyptic number.

It is an amenable number.

724765901 is a deficient number, since it is larger than the sum of its proper divisors (1).

724765901 is an equidigital number, since it uses as much as digits as its factorization.

724765901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 724765901 is about 26921.4765754035. The cubic root of 724765901 is about 898.2541881075.

The spelling of 724765901 in words is "seven hundred twenty-four million, seven hundred sixty-five thousand, nine hundred one".