867406 has 4 divisors (see below), whose sum is σ = 1301112. Its totient is φ = 433702.

The previous prime is 867401. The next prime is 867409. The reversal of 867406 is 604768.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867401) 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 as a sum of consecutive naturals, namely, 216850 + ... + 216853.

It is an arithmetic number, because the mean of its divisors is an integer number (325278).

2⁸⁶⁷⁴⁰⁶ is an apocalyptic number.

867406 is a deficient number, since it is larger than the sum of its proper divisors (433706).

867406 is a wasteful number, since it uses less digits than its factorization.

867406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433705.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 867406 is about 931.3463372989. The cubic root of 867406 is about 95.3690538329.

The spelling of 867406 in words is "eight hundred sixty-seven thousand, four hundred six".