1712861 has 2 divisors, whose sum is σ = 1712862. Its totient is φ = 1712860.

The previous prime is 1712839. The next prime is 1712881. The reversal of 1712861 is 1682171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1705636 + 7225 = 1306^2 + 85^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1712861 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1712861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1712881) 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, 856430 + 856431.

It is an arithmetic number, because the mean of its divisors is an integer number (856431).

2^1712861 is an apocalyptic number.

It is an amenable number.

1712861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1712861 is an equidigital number, since it uses as much as digits as its factorization.

1712861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 26.

The square root of 1712861 is about 1308.7631565719. The cubic root of 1712861 is about 119.6485317743.

The spelling of 1712861 in words is "one million, seven hundred twelve thousand, eight hundred sixty-one".