287361666 has 24 divisors (see below), whose sum is σ = 635865984. Its totient is φ = 93748920.

The previous prime is 287361649. The next prime is 287361689. The reversal of 287361666 is 666163782.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168990 + ... + 170681.

It is an arithmetic number, because the mean of its divisors is an integer number (26494416).

Almost surely, 2^287361666 is an apocalyptic number.

287361666 is an abundant number, since it is smaller than the sum of its proper divisors (348504318).

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

287361666 is a wasteful number, since it uses less digits than its factorization.

287361666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339726 (or 339723 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 287361666 is about 16951.7452198881. The cubic root of 287361666 is about 659.8971878419.

The spelling of 287361666 in words is "two hundred eighty-seven million, three hundred sixty-one thousand, six hundred sixty-six".