726027661 has 2 divisors, whose sum is σ = 726027662. Its totient is φ = 726027660.

The previous prime is 726027629. The next prime is 726027667. The reversal of 726027661 is 166720627.

726027661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 703045225 + 22982436 = 26515^2 + 4794^2 .

It is a cyclic number.

It is not a de Polignac number, because 726027661 - 2⁵ = 726027629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 726027661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726027667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363013830 + 363013831.

It is an arithmetic number, because the mean of its divisors is an integer number (363013831).

Almost surely, 2^726027661 is an apocalyptic number.

It is an amenable number.

726027661 is a deficient number, since it is larger than the sum of its proper divisors (1).

726027661 is an equidigital number, since it uses as much as digits as its factorization.

726027661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 726027661 is about 26944.9004637241. The cubic root of 726027661 is about 898.7751490271.

The spelling of 726027661 in words is "seven hundred twenty-six million, twenty-seven thousand, six hundred sixty-one".