406654 has 8 divisors (see below), whose sum is σ = 615168. Its totient is φ = 201600.

The previous prime is 406649. The next prime is 406661. The reversal of 406654 is 456604.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 547 + ... + 1054.

It is an arithmetic number, because the mean of its divisors is an integer number (76896).

2⁴⁰⁶⁶⁵⁴ is an apocalyptic number.

406654 is a deficient number, since it is larger than the sum of its proper divisors (208514).

406654 is a wasteful number, since it uses less digits than its factorization.

406654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 406654 is about 637.6942841205. The cubic root of 406654 is about 74.0869443131.

The spelling of 406654 in words is "four hundred six thousand, six hundred fifty-four".