726261901 has 2 divisors, whose sum is σ = 726261902. Its totient is φ = 726261900.

The previous prime is 726261883. The next prime is 726261917. The reversal of 726261901 is 109162627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 653569225 + 72692676 = 25565^2 + 8526^2 .

It is a cyclic number.

It is not a de Polignac number, because 726261901 - 2¹⁹ = 725737613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726261971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363130950 + 363130951.

It is an arithmetic number, because the mean of its divisors is an integer number (363130951).

Almost surely, 2^726261901 is an apocalyptic number.

It is an amenable number.

726261901 is a deficient number, since it is larger than the sum of its proper divisors (1).

726261901 is an equidigital number, since it uses as much as digits as its factorization.

726261901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 726261901 is about 26949.2467612733. The cubic root of 726261901 is about 898.8717966091.

The spelling of 726261901 in words is "seven hundred twenty-six million, two hundred sixty-one thousand, nine hundred one".