71026589 has 2 divisors, whose sum is σ = 71026590. Its totient is φ = 71026588.

The previous prime is 71026573. The next prime is 71026607. The reversal of 71026589 is 98562017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70476025 + 550564 = 8395^2 + 742^2 .

It is a cyclic number.

It is not a de Polignac number, because 71026589 - 2⁴ = 71026573 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 (71026889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35513294 + 35513295.

It is an arithmetic number, because the mean of its divisors is an integer number (35513295).

Almost surely, 2^71026589 is an apocalyptic number.

It is an amenable number.

71026589 is a deficient number, since it is larger than the sum of its proper divisors (1).

71026589 is an equidigital number, since it uses as much as digits as its factorization.

71026589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 71026589 is about 8427.7273923639. The cubic root of 71026589 is about 414.1334587273.

The spelling of 71026589 in words is "seventy-one million, twenty-six thousand, five hundred eighty-nine".