406867 has 4 divisors (see below), whose sum is σ = 409320. Its totient is φ = 404416.

The previous prime is 406859. The next prime is 406873. The reversal of 406867 is 768604.

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

It is a cyclic number.

It is not a de Polignac number, because 406867 - 2³ = 406859 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958 + ... + 1315.

It is an arithmetic number, because the mean of its divisors is an integer number (102330).

2⁴⁰⁶⁸⁶⁷ is an apocalyptic number.

406867 is a deficient number, since it is larger than the sum of its proper divisors (2453).

406867 is a wasteful number, since it uses less digits than its factorization.

406867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452.

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

The square root of 406867 is about 637.8612701834. The cubic root of 406867 is about 74.0998773099.

The spelling of 406867 in words is "four hundred six thousand, eight hundred sixty-seven".