726130709 has 2 divisors, whose sum is σ = 726130710. Its totient is φ = 726130708.

The previous prime is 726130609. The next prime is 726130807. The reversal of 726130709 is 907031627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 498271684 + 227859025 = 22322^2 + 15095^2 .

It is a cyclic number.

It is not a de Polignac number, because 726130709 - 2¹² = 726126613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726130409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363065354 + 363065355.

It is an arithmetic number, because the mean of its divisors is an integer number (363065355).

Almost surely, 2^726130709 is an apocalyptic number.

It is an amenable number.

726130709 is a deficient number, since it is larger than the sum of its proper divisors (1).

726130709 is an equidigital number, since it uses as much as digits as its factorization.

726130709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 726130709 is about 26946.8125944424. The cubic root of 726130709 is about 898.8176692620.

The spelling of 726130709 in words is "seven hundred twenty-six million, one hundred thirty thousand, seven hundred nine".