118665587 has 2 divisors, whose sum is σ = 118665588. Its totient is φ = 118665586.

The previous prime is 118665581. The next prime is 118665601. The reversal of 118665587 is 785566811.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118665587 - 2⁴ = 118665571 is a prime.

It is not a weakly prime, because it can be changed into another prime (118665581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59332793 + 59332794.

It is an arithmetic number, because the mean of its divisors is an integer number (59332794).

Almost surely, 2^118665587 is an apocalyptic number.

118665587 is a deficient number, since it is larger than the sum of its proper divisors (1).

118665587 is an equidigital number, since it uses as much as digits as its factorization.

118665587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 47.

The square root of 118665587 is about 10893.3735362375. The cubic root of 118665587 is about 491.4072926809.

The spelling of 118665587 in words is "one hundred eighteen million, six hundred sixty-five thousand, five hundred eighty-seven".