406726 has 4 divisors (see below), whose sum is σ = 610092. Its totient is φ = 203362.

The previous prime is 406717. The next prime is 406729. The reversal of 406726 is 627604.

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

It is a self number, because there is not a number n which added to its sum of digits gives 406726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101680 + ... + 101683.

It is an arithmetic number, because the mean of its divisors is an integer number (152523).

2⁴⁰⁶⁷²⁶ is an apocalyptic number.

406726 is a deficient number, since it is larger than the sum of its proper divisors (203366).

406726 is a wasteful number, since it uses less digits than its factorization.

406726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203365.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 406726 is about 637.7507350055. The cubic root of 406726 is about 74.0913165355.

The spelling of 406726 in words is "four hundred six thousand, seven hundred twenty-six".