287006 has 4 divisors (see below), whose sum is σ = 430512. Its totient is φ = 143502.

The previous prime is 287003. The next prime is 287047. The reversal of 287006 is 600782.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 287006.

It is not an unprimeable number, because it can be changed into a prime (287003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71750 + ... + 71753.

It is an arithmetic number, because the mean of its divisors is an integer number (107628).

2²⁸⁷⁰⁰⁶ is an apocalyptic number.

287006 is a deficient number, since it is larger than the sum of its proper divisors (143506).

287006 is a wasteful number, since it uses less digits than its factorization.

287006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143505.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 287006 is about 535.7294093103. The cubic root of 287006 is about 65.9624825035.

Adding to 287006 its reverse (600782), we get a palindrome (887788).

The spelling of 287006 in words is "two hundred eighty-seven thousand, six".