726298813 has 2 divisors, whose sum is σ = 726298814. Its totient is φ = 726298812.

The previous prime is 726298753. The next prime is 726298843. The reversal of 726298813 is 318892627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 703469529 + 22829284 = 26523^2 + 4778^2 .

It is a cyclic number.

It is not a de Polignac number, because 726298813 - 2²¹ = 724201661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726298843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363149406 + 363149407.

It is an arithmetic number, because the mean of its divisors is an integer number (363149407).

Almost surely, 2^726298813 is an apocalyptic number.

It is an amenable number.

726298813 is a deficient number, since it is larger than the sum of its proper divisors (1).

726298813 is an equidigital number, since it uses as much as digits as its factorization.

726298813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 726298813 is about 26949.9315954605. The cubic root of 726298813 is about 898.8870246298.

The spelling of 726298813 in words is "seven hundred twenty-six million, two hundred ninety-eight thousand, eight hundred thirteen".