406718 has 8 divisors (see below), whose sum is σ = 657048. Its totient is φ = 187704.

The previous prime is 406717. The next prime is 406729. The reversal of 406718 is 817604.

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 15643 = 406718 / (4 + 0 + 6 + 7 + 1 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406717) 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 in 3 ways as a sum of consecutive naturals, for example, 7796 + ... + 7847.

It is an arithmetic number, because the mean of its divisors is an integer number (82131).

2⁴⁰⁶⁷¹⁸ is an apocalyptic number.

406718 is a deficient number, since it is larger than the sum of its proper divisors (250330).

406718 is a wasteful number, since it uses less digits than its factorization.

406718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15658.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 406718 is about 637.7444629317. The cubic root of 406718 is about 74.0908307585.

The spelling of 406718 in words is "four hundred six thousand, seven hundred eighteen".