406658 has 16 divisors (see below), whose sum is σ = 720384. Its totient is φ = 168480.

The previous prime is 406649. The next prime is 406661. The reversal of 406658 is 856604.

It is a self number, because there is not a number n which added to its sum of digits gives 406658.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 406658.

It is an unprimeable number.

406658 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35 + ... + 902.

It is an arithmetic number, because the mean of its divisors is an integer number (45024).

2⁴⁰⁶⁶⁵⁸ is an apocalyptic number.

406658 is a deficient number, since it is larger than the sum of its proper divisors (313726).

406658 is a wasteful number, since it uses less digits than its factorization.

406658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 406658 is about 637.6974204119. The cubic root of 406658 is about 74.0871872279.

The spelling of 406658 in words is "four hundred six thousand, six hundred fifty-eight".