726440597 has 2 divisors, whose sum is σ = 726440598. Its totient is φ = 726440596.

The previous prime is 726440567. The next prime is 726440641. The reversal of 726440597 is 795044627.

726440597 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (726440641) can be obtained adding 726440597 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666362596 + 60078001 = 25814^2 + 7751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726440597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726440527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363220298 + 363220299.

It is an arithmetic number, because the mean of its divisors is an integer number (363220299).

Almost surely, 2^726440597 is an apocalyptic number.

It is an amenable number.

726440597 is a deficient number, since it is larger than the sum of its proper divisors (1).

726440597 is an equidigital number, since it uses as much as digits as its factorization.

726440597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 726440597 is about 26952.5619746992. The cubic root of 726440597 is about 898.9455127265.

The spelling of 726440597 in words is "seven hundred twenty-six million, four hundred forty thousand, five hundred ninety-seven".