717149 has 2 divisors, whose sum is σ = 717150. Its totient is φ = 717148.

The previous prime is 717139. The next prime is 717151. The reversal of 717149 is 941717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 611524 + 105625 = 782^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 717149 - 2⁴ = 717133 is a prime.

Together with 717151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (717109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358574 + 358575.

It is an arithmetic number, because the mean of its divisors is an integer number (358575).

2⁷¹⁷¹⁴⁹ is an apocalyptic number.

It is an amenable number.

717149 is a deficient number, since it is larger than the sum of its proper divisors (1).

717149 is an equidigital number, since it uses as much as digits as its factorization.

717149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 29.

The square root of 717149 is about 846.8465032106. The cubic root of 717149 is about 89.5096376542.

The spelling of 717149 in words is "seven hundred seventeen thousand, one hundred forty-nine".