717139 has 2 divisors, whose sum is σ = 717140. Its totient is φ = 717138.

The previous prime is 717133. The next prime is 717149. The reversal of 717139 is 931717.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 717139 - 2⁷ = 717011 is a prime.

717139 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (717133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358569 + 358570.

It is an arithmetic number, because the mean of its divisors is an integer number (358570).

2⁷¹⁷¹³⁹ is an apocalyptic number.

717139 is a deficient number, since it is larger than the sum of its proper divisors (1).

717139 is an equidigital number, since it uses as much as digits as its factorization.

717139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1323, while the sum is 28.

The square root of 717139 is about 846.8405989323. The cubic root of 717139 is about 89.5092216084.

The spelling of 717139 in words is "seven hundred seventeen thousand, one hundred thirty-nine".