1716889 has 2 divisors, whose sum is σ = 1716890. Its totient is φ = 1716888.

The previous prime is 1716853. The next prime is 1716893. The reversal of 1716889 is 9886171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 870489 + 846400 = 933^2 + 920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1716889 - 2⁷ = 1716761 is a prime.

It is not a weakly prime, because it can be changed into another prime (1716839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 858444 + 858445.

It is an arithmetic number, because the mean of its divisors is an integer number (858445).

2^1716889 is an apocalyptic number.

It is an amenable number.

1716889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1716889 is an equidigital number, since it uses as much as digits as its factorization.

1716889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 40.

The square root of 1716889 is about 1310.3011104323. The cubic root of 1716889 is about 119.7422476869.

The spelling of 1716889 in words is "one million, seven hundred sixteen thousand, eight hundred eighty-nine".