863678 has 8 divisors (see below), whose sum is σ = 1340280. Its totient is φ = 416920.

The previous prime is 863671. The next prime is 863689. The reversal of 863678 is 876368.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863671) by changing a digit.

863678 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7388 + ... + 7503.

It is an arithmetic number, because the mean of its divisors is an integer number (167535).

2⁸⁶³⁶⁷⁸ is an apocalyptic number.

863678 is a deficient number, since it is larger than the sum of its proper divisors (476602).

863678 is a wasteful number, since it uses less digits than its factorization.

863678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14922.

The product of its digits is 48384, while the sum is 38.

The square root of 863678 is about 929.3427785268. The cubic root of 863678 is about 95.2322296308.

The spelling of 863678 in words is "eight hundred sixty-three thousand, six hundred seventy-eight".