717421027 has 2 divisors, whose sum is σ = 717421028. Its totient is φ = 717421026.

The previous prime is 717420947. The next prime is 717421031. The reversal of 717421027 is 720124717.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 717421027 - 2¹¹ = 717418979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 717421027.

It is not a weakly prime, because it can be changed into another prime (717451027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358710513 + 358710514.

It is an arithmetic number, because the mean of its divisors is an integer number (358710514).

Almost surely, 2^717421027 is an apocalyptic number.

717421027 is a deficient number, since it is larger than the sum of its proper divisors (1).

717421027 is an equidigital number, since it uses as much as digits as its factorization.

717421027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 717421027 is about 26784.7162949321. The cubic root of 717421027 is about 895.2095374066.

The spelling of 717421027 in words is "seven hundred seventeen million, four hundred twenty-one thousand, twenty-seven".