407666 has 16 divisors (see below), whose sum is σ = 718656. Its totient is φ = 169776.

The previous prime is 407657. The next prime is 407669. The reversal of 407666 is 666704.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (407669) 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, 125 + ... + 911.

It is an arithmetic number, because the mean of its divisors is an integer number (44916).

2⁴⁰⁷⁶⁶⁶ is an apocalyptic number.

407666 is a deficient number, since it is larger than the sum of its proper divisors (310990).

407666 is a wasteful number, since it uses less digits than its factorization.

407666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 407666 is about 638.4872747362. The cubic root of 407666 is about 74.1483510441.

The spelling of 407666 in words is "four hundred seven thousand, six hundred sixty-six".