726130609 has 2 divisors, whose sum is σ = 726130610. Its totient is φ = 726130608.

The previous prime is 726130597. The next prime is 726130709. The reversal of 726130609 is 906031627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 714760225 + 11370384 = 26735^2 + 3372^2 .

It is a cyclic number.

It is not a de Polignac number, because 726130609 - 2⁷ = 726130481 is a prime.

It is a super-2 number, since 2×726130609² = 1054531322653421762, which contains 22 as substring.

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

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363065304 + 363065305.

It is an arithmetic number, because the mean of its divisors is an integer number (363065305).

Almost surely, 2^726130609 is an apocalyptic number.

It is an amenable number.

726130609 is a deficient number, since it is larger than the sum of its proper divisors (1).

726130609 is an equidigital number, since it uses as much as digits as its factorization.

726130609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 726130609 is about 26946.8107389353. The cubic root of 726130609 is about 898.8176280014.

The spelling of 726130609 in words is "seven hundred twenty-six million, one hundred thirty thousand, six hundred nine".