287680163 has 4 divisors (see below), whose sum is σ = 287860128. Its totient is φ = 287500200.

The previous prime is 287680157. The next prime is 287680177. The reversal of 287680163 is 361086782.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 287680163 - 2⁴ = 287680147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 287680163.

It is not an unprimeable number, because it can be changed into a prime (287680123) 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 3 ways as a sum of consecutive naturals, for example, 87563 + ... + 90788.

It is an arithmetic number, because the mean of its divisors is an integer number (71965032).

Almost surely, 2^287680163 is an apocalyptic number.

287680163 is a deficient number, since it is larger than the sum of its proper divisors (179965).

287680163 is a wasteful number, since it uses less digits than its factorization.

287680163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179964.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 287680163 is about 16961.1368427945. The cubic root of 287680163 is about 660.1408966104.

The spelling of 287680163 in words is "two hundred eighty-seven million, six hundred eighty thousand, one hundred sixty-three".