406671 has 8 divisors (see below), whose sum is σ = 545280. Its totient is φ = 269592.

The previous prime is 406661. The next prime is 406673. The reversal of 406671 is 176604.

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

It is not a de Polignac number, because 406671 - 2¹⁵ = 373903 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406673) 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, 610 + ... + 1088.

It is an arithmetic number, because the mean of its divisors is an integer number (68160).

2⁴⁰⁶⁶⁷¹ is an apocalyptic number.

406671 is a deficient number, since it is larger than the sum of its proper divisors (138609).

406671 is a wasteful number, since it uses less digits than its factorization.

406671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 406671 is about 637.7076132523. The cubic root of 406671 is about 74.0879766899.

The spelling of 406671 in words is "four hundred six thousand, six hundred seventy-one".