726447473 has 2 divisors, whose sum is σ = 726447474. Its totient is φ = 726447472.

The previous prime is 726447467. The next prime is 726447497. The reversal of 726447473 is 374744627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 552814144 + 173633329 = 23512^2 + 13177^2 .

It is a cyclic number.

It is not a de Polignac number, because 726447473 - 2⁶ = 726447409 is a prime.

It is not a weakly prime, because it can be changed into another prime (726447413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363223736 + 363223737.

It is an arithmetic number, because the mean of its divisors is an integer number (363223737).

Almost surely, 2^726447473 is an apocalyptic number.

It is an amenable number.

726447473 is a deficient number, since it is larger than the sum of its proper divisors (1).

726447473 is an equidigital number, since it uses as much as digits as its factorization.

726447473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 44.

The square root of 726447473 is about 26952.6895318445. The cubic root of 726447473 is about 898.9483489895.

The spelling of 726447473 in words is "seven hundred twenty-six million, four hundred forty-seven thousand, four hundred seventy-three".