854987 has 8 divisors (see below), whose sum is σ = 992256. Its totient is φ = 721512.

The previous prime is 854963. The next prime is 854993. The reversal of 854987 is 789458.

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 854987 - 2⁶ = 854923 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (854927) 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, 443 + ... + 1380.

It is an arithmetic number, because the mean of its divisors is an integer number (124032).

2⁸⁵⁴⁹⁸⁷ is an apocalyptic number.

854987 is a deficient number, since it is larger than the sum of its proper divisors (137269).

854987 is a wasteful number, since it uses less digits than its factorization.

854987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897.

The product of its digits is 80640, while the sum is 41.

The square root of 854987 is about 924.6550708237. The cubic root of 854987 is about 94.9117185414.

The spelling of 854987 in words is "eight hundred fifty-four thousand, nine hundred eighty-seven".