406659 has 8 divisors (see below), whose sum is σ = 591552. Its totient is φ = 246440.

The previous prime is 406649. The next prime is 406661. The reversal of 406659 is 956604.

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

It is a cyclic number.

It is not a de Polignac number, because 406659 - 2⁷ = 406531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406649) 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, 6129 + ... + 6194.

It is an arithmetic number, because the mean of its divisors is an integer number (73944).

2⁴⁰⁶⁶⁵⁹ is an apocalyptic number.

406659 is a deficient number, since it is larger than the sum of its proper divisors (184893).

406659 is a wasteful number, since it uses less digits than its factorization.

406659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12337.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 406659 is about 637.6982044823. The cubic root of 406659 is about 74.0872479563.

Subtracting 406659 from its reverse (956604), we obtain a palindrome (549945).

The spelling of 406659 in words is "four hundred six thousand, six hundred fifty-nine".