11616589 has 2 divisors, whose sum is σ = 11616590. Its totient is φ = 11616588.

The previous prime is 11616551. The next prime is 11616601. The reversal of 11616589 is 98561611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7344100 + 4272489 = 2710^2 + 2067^2 .

It is a cyclic number.

It is not a de Polignac number, because 11616589 - 2⁷ = 11616461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11616509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5808294 + 5808295.

It is an arithmetic number, because the mean of its divisors is an integer number (5808295).

Almost surely, 2^11616589 is an apocalyptic number.

It is an amenable number.

11616589 is a deficient number, since it is larger than the sum of its proper divisors (1).

11616589 is an equidigital number, since it uses as much as digits as its factorization.

11616589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 37.

The square root of 11616589 is about 3408.3117521729. The cubic root of 11616589 is about 226.4780974456.

It can be divided in two parts, 1161 and 6589, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 11616589 in words is "eleven million, six hundred sixteen thousand, five hundred eighty-nine".