406646223 has 8 divisors (see below), whose sum is σ = 542919936. Its totient is φ = 270735000.

The previous prime is 406646183. The next prime is 406646237. The reversal of 406646223 is 322646604.

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

It is not a de Polignac number, because 406646223 - 2¹² = 406642127 is a prime.

It is a super-2 number, since 2×406646223² = 330722301360331458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406641223) 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, 87993 + ... + 92498.

It is an arithmetic number, because the mean of its divisors is an integer number (67864992).

Almost surely, 2^406646223 is an apocalyptic number.

406646223 is a deficient number, since it is larger than the sum of its proper divisors (136273713).

406646223 is a wasteful number, since it uses less digits than its factorization.

406646223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181245.

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 406646223 is about 20165.4710582223. The cubic root of 406646223 is about 740.8647202144.

The spelling of 406646223 in words is "four hundred six million, six hundred forty-six thousand, two hundred twenty-three".