287468666 has 16 divisors (see below), whose sum is σ = 435352320. Its totient is φ = 142357200.

The previous prime is 287468663. The next prime is 287468669. The reversal of 287468666 is 666864782.

It is an interprime number because it is at equal distance from previous prime (287468663) and next prime (287468669).

It is not an unprimeable number, because it can be changed into a prime (287468663) 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 in 7 ways as a sum of consecutive naturals, for example, 116255 + ... + 118701.

It is an arithmetic number, because the mean of its divisors is an integer number (27209520).

Almost surely, 2^287468666 is an apocalyptic number.

287468666 is a deficient number, since it is larger than the sum of its proper divisors (147883654).

287468666 is a wasteful number, since it uses less digits than its factorization.

287468666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2989.

The product of its digits is 4644864, while the sum is 53.

The square root of 287468666 is about 16954.9009433851. The cubic root of 287468666 is about 659.9790825939.

The spelling of 287468666 in words is "two hundred eighty-seven million, four hundred sixty-eight thousand, six hundred sixty-six".