287707 has 8 divisors (see below), whose sum is σ = 343296. Its totient is φ = 235752.

The previous prime is 287701. The next prime is 287731. The reversal of 287707 is 707782.

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 287707 - 2⁷ = 287579 is a prime.

It is a Duffinian number.

287707 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (287701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733 + ... + 1054.

It is an arithmetic number, because the mean of its divisors is an integer number (42912).

2²⁸⁷⁷⁰⁷ is an apocalyptic number.

287707 is a deficient number, since it is larger than the sum of its proper divisors (55589).

287707 is a wasteful number, since it uses less digits than its factorization.

287707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 287707 is about 536.3832585009. The cubic root of 287707 is about 66.0161423632.

The spelling of 287707 in words is "two hundred eighty-seven thousand, seven hundred seven".