427717 has 2 divisors, whose sum is σ = 427718. Its totient is φ = 427716.

The previous prime is 427711. The next prime is 427723. The reversal of 427717 is 717724.

It is a Cunningham number, because it is equal to 654²+1.

It is a balanced prime because it is at equal distance from previous prime (427711) and next prime (427723).

It can be written as a sum of positive squares in only one way, i.e., 427716 + 1 = 654^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427717 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213858 + 213859.

It is an arithmetic number, because the mean of its divisors is an integer number (213859).

2⁴²⁷⁷¹⁷ is an apocalyptic number.

It is an amenable number.

427717 is a deficient number, since it is larger than the sum of its proper divisors (1).

427717 is an equidigital number, since it uses as much as digits as its factorization.

427717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2744, while the sum is 28.

The square root of 427717 is about 654.0007645255. Note that the first 3 decimals coincide. The cubic root of 427717 is about 75.3446067830.

It can be divided in two parts, 42771 and 7, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 427717 in words is "four hundred twenty-seven thousand, seven hundred seventeen", and thus it is an iban number.