406668231 has 6 divisors (see below), whose sum is σ = 587409680. Its totient is φ = 271112148.

The previous prime is 406668193. The next prime is 406668239. The reversal of 406668231 is 132866604.

It is not a de Polignac number, because 406668231 - 2⁷ = 406668103 is a prime.

It is a super-3 number, since 3×406668231³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406668239) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22592671 + ... + 22592688.

Almost surely, 2^406668231 is an apocalyptic number.

406668231 is a deficient number, since it is larger than the sum of its proper divisors (180741449).

406668231 is a wasteful number, since it uses less digits than its factorization.

406668231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45185365 (or 45185362 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 406668231 is about 20166.0167360835. The cubic root of 406668231 is about 740.8780853590.

The spelling of 406668231 in words is "four hundred six million, six hundred sixty-eight thousand, two hundred thirty-one".