118666087 has 4 divisors (see below), whose sum is σ = 118688976. Its totient is φ = 118643200.

The previous prime is 118666073. The next prime is 118666091. The reversal of 118666087 is 780666811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780666811 = 37 ⋅21099103.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118666087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118666487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462 + ... + 15412.

It is an arithmetic number, because the mean of its divisors is an integer number (29672244).

Almost surely, 2^118666087 is an apocalyptic number.

118666087 is a deficient number, since it is larger than the sum of its proper divisors (22889).

118666087 is an equidigital number, since it uses as much as digits as its factorization.

118666087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22888.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 118666087 is about 10893.3964859451. The cubic root of 118666087 is about 491.4079828650.

The spelling of 118666087 in words is "one hundred eighteen million, six hundred sixty-six thousand, eighty-seven".