108665587 has 2 divisors, whose sum is σ = 108665588. Its totient is φ = 108665586.

The previous prime is 108665569. The next prime is 108665647. The reversal of 108665587 is 785566801.

It is a weak prime.

It is an emirp because it is prime and its reverse (785566801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108665587 - 2¹¹ = 108663539 is a prime.

It is not a weakly prime, because it can be changed into another prime (108665507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54332793 + 54332794.

It is an arithmetic number, because the mean of its divisors is an integer number (54332794).

Almost surely, 2^108665587 is an apocalyptic number.

108665587 is a deficient number, since it is larger than the sum of its proper divisors (1).

108665587 is an equidigital number, since it uses as much as digits as its factorization.

108665587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 108665587 is about 10424.2787280464. The cubic root of 108665587 is about 477.1966030415.

The spelling of 108665587 in words is "one hundred eight million, six hundred sixty-five thousand, five hundred eighty-seven".