118668861 has 8 divisors (see below), whose sum is σ = 175805760. Its totient is φ = 79112556.

The previous prime is 118668853. The next prime is 118668917. The reversal of 118668861 is 168866811.

It is not a de Polignac number, because 118668861 - 2³ = 118668853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118688861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2197545 + ... + 2197598.

It is an arithmetic number, because the mean of its divisors is an integer number (21975720).

Almost surely, 2^118668861 is an apocalyptic number.

It is an amenable number.

118668861 is a deficient number, since it is larger than the sum of its proper divisors (57136899).

118668861 is an equidigital number, since it uses as much as digits as its factorization.

118668861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395152 (or 4395146 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 118668861 is about 10893.5238100442. The cubic root of 118668861 is about 491.4118119711.

The spelling of 118668861 in words is "one hundred eighteen million, six hundred sixty-eight thousand, eight hundred sixty-one".