287766668 has 12 divisors (see below), whose sum is σ = 575533392. Its totient is φ = 123328560.

The previous prime is 287766617. The next prime is 287766671. The reversal of 287766668 is 866667782.

287766668 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

287766668 is an admirable number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5138663 + ... + 5138718.

It is an arithmetic number, because the mean of its divisors is an integer number (47961116).

Almost surely, 2^287766668 is an apocalyptic number.

287766668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

287766668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

287766668 is a wasteful number, since it uses less digits than its factorization.

287766668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10277392 (or 10277390 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 56.

The square root of 287766668 is about 16963.6867455161. The cubic root of 287766668 is about 660.2070577768.

The spelling of 287766668 in words is "two hundred eighty-seven million, seven hundred sixty-six thousand, six hundred sixty-eight".