867678 has 32 divisors (see below), whose sum is σ = 2017536. Its totient is φ = 243648.

The previous prime is 867677. The next prime is 867679. The reversal of 867678 is 876768.

It is an interprime number because it is at equal distance from previous prime (867677) and next prime (867679).

It is a super-2 number, since 2×867678² = 1505730223368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867677) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2925 + ... + 3207.

It is an arithmetic number, because the mean of its divisors is an integer number (63048).

2⁸⁶⁷⁶⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 867678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008768).

867678 is an abundant number, since it is smaller than the sum of its proper divisors (1149858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

867678 is a wasteful number, since it uses less digits than its factorization.

867678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368.

The product of its digits is 112896, while the sum is 42.

The square root of 867678 is about 931.4923510153. The cubic root of 867678 is about 95.3790213574.

The spelling of 867678 in words is "eight hundred sixty-seven thousand, six hundred seventy-eight".