7216589 has 2 divisors, whose sum is σ = 7216590. Its totient is φ = 7216588.

The previous prime is 7216577. The next prime is 7216597. The reversal of 7216589 is 9856127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4182025 + 3034564 = 2045^2 + 1742^2 .

It is a cyclic number.

It is not a de Polignac number, because 7216589 - 2¹² = 7212493 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7216889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3608294 + 3608295.

It is an arithmetic number, because the mean of its divisors is an integer number (3608295).

Almost surely, 2^7216589 is an apocalyptic number.

It is an amenable number.

7216589 is a deficient number, since it is larger than the sum of its proper divisors (1).

7216589 is an equidigital number, since it uses as much as digits as its factorization.

7216589 is an evil number, because the sum of its binary digits is even.

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

The square root of 7216589 is about 2686.3709721481. The cubic root of 7216589 is about 193.2460641276.

It can be divided in two parts, 72 and 16589, that added together give a palindrome (16661).

The spelling of 7216589 in words is "seven million, two hundred sixteen thousand, five hundred eighty-nine".