287608 has 8 divisors (see below), whose sum is σ = 539280. Its totient is φ = 143800.

The previous prime is 287597. The next prime is 287611. The reversal of 287608 is 806782.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 287608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17968 + ... + 17983.

It is an arithmetic number, because the mean of its divisors is an integer number (67410).

2²⁸⁷⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

287608 is a deficient number, since it is larger than the sum of its proper divisors (251672).

287608 is a wasteful number, since it uses less digits than its factorization.

287608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35957 (or 35953 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 287608 is about 536.2909658012. The cubic root of 287608 is about 66.0085694413.

The spelling of 287608 in words is "two hundred eighty-seven thousand, six hundred eight".