726849317 has 2 divisors, whose sum is σ = 726849318. Its totient is φ = 726849316.

The previous prime is 726849307. The next prime is 726849329. The reversal of 726849317 is 713948627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 712302721 + 14546596 = 26689^2 + 3814^2 .

It is a cyclic number.

It is not a de Polignac number, because 726849317 - 2²² = 722655013 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 (726849307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363424658 + 363424659.

It is an arithmetic number, because the mean of its divisors is an integer number (363424659).

Almost surely, 2^726849317 is an apocalyptic number.

It is an amenable number.

726849317 is a deficient number, since it is larger than the sum of its proper divisors (1).

726849317 is an equidigital number, since it uses as much as digits as its factorization.

726849317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 47.

The square root of 726849317 is about 26960.1431190563. The cubic root of 726849317 is about 899.1140734805.

The spelling of 726849317 in words is "seven hundred twenty-six million, eight hundred forty-nine thousand, three hundred seventeen".