726402587 has 2 divisors, whose sum is σ = 726402588. Its totient is φ = 726402586.

The previous prime is 726402557. The next prime is 726402613. The reversal of 726402587 is 785204627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 726402587 - 2¹⁰ = 726401563 is a prime.

It is not a weakly prime, because it can be changed into another prime (726402517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363201293 + 363201294.

It is an arithmetic number, because the mean of its divisors is an integer number (363201294).

Almost surely, 2^726402587 is an apocalyptic number.

726402587 is a deficient number, since it is larger than the sum of its proper divisors (1).

726402587 is an equidigital number, since it uses as much as digits as its factorization.

726402587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 726402587 is about 26951.8568377023. The cubic root of 726402587 is about 898.9298337593.

The spelling of 726402587 in words is "seven hundred twenty-six million, four hundred two thousand, five hundred eighty-seven".