867646 has 24 divisors (see below), whose sum is σ = 1502064. Its totient is φ = 374400.

The previous prime is 867641. The next prime is 867653. The reversal of 867646 is 646768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867641) 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 11 ways as a sum of consecutive naturals, for example, 5671 + ... + 5821.

It is an arithmetic number, because the mean of its divisors is an integer number (62586).

2⁸⁶⁷⁶⁴⁶ is an apocalyptic number.

867646 is a deficient number, since it is larger than the sum of its proper divisors (634418).

867646 is a wasteful number, since it uses less digits than its factorization.

867646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 183 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 867646 is about 931.4751741190. The cubic root of 867646 is about 95.3778488156.

The spelling of 867646 in words is "eight hundred sixty-seven thousand, six hundred forty-six".