726601273 has 2 divisors, whose sum is σ = 726601274. Its totient is φ = 726601272.

The previous prime is 726601259. The next prime is 726601277. The reversal of 726601273 is 372106627.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 726410304 + 190969 = 26952^2 + 437^2 .

It is a cyclic number.

It is not a de Polignac number, because 726601273 - 2¹³ = 726593081 is a prime.

It is not a weakly prime, because it can be changed into another prime (726601277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363300636 + 363300637.

It is an arithmetic number, because the mean of its divisors is an integer number (363300637).

Almost surely, 2^726601273 is an apocalyptic number.

It is an amenable number.

726601273 is a deficient number, since it is larger than the sum of its proper divisors (1).

726601273 is an equidigital number, since it uses as much as digits as its factorization.

726601273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 726601273 is about 26955.5425283929. The cubic root of 726601273 is about 899.0117848676.

The spelling of 726601273 in words is "seven hundred twenty-six million, six hundred one thousand, two hundred seventy-three".