711889 has 2 divisors, whose sum is σ = 711890. Its totient is φ = 711888.

The previous prime is 711877. The next prime is 711899. The reversal of 711889 is 988117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 369664 + 342225 = 608^2 + 585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-711889 is a prime.

It is not a weakly prime, because it can be changed into another prime (711829) 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, 355944 + 355945.

It is an arithmetic number, because the mean of its divisors is an integer number (355945).

2⁷¹¹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

711889 is a deficient number, since it is larger than the sum of its proper divisors (1).

711889 is an equidigital number, since it uses as much as digits as its factorization.

711889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 34.

The square root of 711889 is about 843.7351480174. The cubic root of 711889 is about 89.2902613456.

It can be divided in two parts, 711 and 889, that added together give a square (1600 = 40²).

The spelling of 711889 in words is "seven hundred eleven thousand, eight hundred eighty-nine".