726368491 has 2 divisors, whose sum is σ = 726368492. Its totient is φ = 726368490.

The previous prime is 726368477. The next prime is 726368501. The reversal of 726368491 is 194863627.

726368491 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726368491 is a prime.

It is a super-2 number, since 2×726368491² = 1055222369435234162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (726368791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363184245 + 363184246.

It is an arithmetic number, because the mean of its divisors is an integer number (363184246).

Almost surely, 2^726368491 is an apocalyptic number.

726368491 is a deficient number, since it is larger than the sum of its proper divisors (1).

726368491 is an equidigital number, since it uses as much as digits as its factorization.

726368491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 726368491 is about 26951.2242950112. The cubic root of 726368491 is about 898.9157688354.

The spelling of 726368491 in words is "seven hundred twenty-six million, three hundred sixty-eight thousand, four hundred ninety-one".