726738241 has 2 divisors, whose sum is σ = 726738242. Its totient is φ = 726738240.

The previous prime is 726738209. The next prime is 726738251. The reversal of 726738241 is 142837627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 709689600 + 17048641 = 26640^2 + 4129^2 .

It is a cyclic number.

It is not a de Polignac number, because 726738241 - 2⁵ = 726738209 is a prime.

It is equal to p_37564465 and since 726738241 and 37564465 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 726738194 and 726738203.

It is not a weakly prime, because it can be changed into another prime (726738251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363369120 + 363369121.

It is an arithmetic number, because the mean of its divisors is an integer number (363369121).

Almost surely, 2^726738241 is an apocalyptic number.

It is an amenable number.

726738241 is a deficient number, since it is larger than the sum of its proper divisors (1).

726738241 is an equidigital number, since it uses as much as digits as its factorization.

726738241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 40.

The square root of 726738241 is about 26958.0830364475. The cubic root of 726738241 is about 899.0682707351.

The spelling of 726738241 in words is "seven hundred twenty-six million, seven hundred thirty-eight thousand, two hundred forty-one".