11605987 has 2 divisors, whose sum is σ = 11605988. Its totient is φ = 11605986.

The previous prime is 11605981. The next prime is 11606009. The reversal of 11605987 is 78950611.

It is a weak prime.

It is an emirp because it is prime and its reverse (78950611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11605987 - 2⁷ = 11605859 is a prime.

It is not a weakly prime, because it can be changed into another prime (11605981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5802993 + 5802994.

It is an arithmetic number, because the mean of its divisors is an integer number (5802994).

Almost surely, 2^11605987 is an apocalyptic number.

11605987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11605987 is an equidigital number, since it uses as much as digits as its factorization.

11605987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 11605987 is about 3406.7560816707. The cubic root of 11605987 is about 226.4091772824.

The spelling of 11605987 in words is "eleven million, six hundred five thousand, nine hundred eighty-seven".