287695 has 8 divisors (see below), whose sum is σ = 348336. Its totient is φ = 228096.

The previous prime is 287689. The next prime is 287701. The reversal of 287695 is 596782.

It is an interprime number because it is at equal distance from previous prime (287689) and next prime (287701).

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

It is a 8-Lehmer number, since φ(287695) divides (287695-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 287695 - 2¹⁵ = 254927 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 8³ + 6⁷ + 7² + 9⁴ + 5³ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 639 + ... + 991.

It is an arithmetic number, because the mean of its divisors is an integer number (43542).

2²⁸⁷⁶⁹⁵ is an apocalyptic number.

287695 is a deficient number, since it is larger than the sum of its proper divisors (60641).

287695 is a wasteful number, since it uses less digits than its factorization.

287695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521.

The product of its digits is 30240, while the sum is 37.

The square root of 287695 is about 536.3720723528. The cubic root of 287695 is about 66.0152245258.

The spelling of 287695 in words is "two hundred eighty-seven thousand, six hundred ninety-five".