287963 has 8 divisors (see below), whose sum is σ = 328608. Its totient is φ = 249984.

The previous prime is 287939. The next prime is 287977. The reversal of 287963 is 369782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 287963 - 2¹⁸ = 25819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287933) 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, 431 + ... + 872.

It is an arithmetic number, because the mean of its divisors is an integer number (41076).

2²⁸⁷⁹⁶³ is an apocalyptic number.

287963 is a deficient number, since it is larger than the sum of its proper divisors (40645).

287963 is a wasteful number, since it uses less digits than its factorization.

287963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333.

The product of its digits is 18144, while the sum is 35.

The square root of 287963 is about 536.6218407780. The cubic root of 287963 is about 66.0357168172.

The spelling of 287963 in words is "two hundred eighty-seven thousand, nine hundred sixty-three".