868947 has 8 divisors (see below), whose sum is σ = 1169856. Its totient is φ = 573672.

The previous prime is 868943. The next prime is 868951. The reversal of 868947 is 749868.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (868943) and next prime (868951).

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

It is not a de Polignac number, because 868947 - 2² = 868943 is a prime.

868947 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 868899 and 868908.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 868947.

It is not an unprimeable number, because it can be changed into a prime (868943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1033 + ... + 1674.

It is an arithmetic number, because the mean of its divisors is an integer number (146232).

2⁸⁶⁸⁹⁴⁷ is an apocalyptic number.

868947 is a deficient number, since it is larger than the sum of its proper divisors (300909).

868947 is a wasteful number, since it uses less digits than its factorization.

868947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2817.

The product of its digits is 96768, while the sum is 42.

The square root of 868947 is about 932.1732671558. The cubic root of 868947 is about 95.4254967473.

The spelling of 868947 in words is "eight hundred sixty-eight thousand, nine hundred forty-seven".