6401223 has 12 divisors (see below), whose sum is σ = 9268168. Its totient is φ = 4257360.

The previous prime is 6401203. The next prime is 6401249. The reversal of 6401223 is 3221046.

It is a happy number.

6401223 is a `hidden beast` number, since 640 + 1 + 2 + 23 = 666.

6401223 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6401223 - 2⁵ = 6401191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6401196 and 6401205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6861 + ... + 7737.

Almost surely, 2^6401223 is an apocalyptic number.

6401223 is a deficient number, since it is larger than the sum of its proper divisors (2866945).

6401223 is a wasteful number, since it uses less digits than its factorization.

6401223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694 (or 1691 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 6401223 is about 2530.0638331868. The cubic root of 6401223 is about 185.6753789728.

Adding to 6401223 its reverse (3221046), we get a palindrome (9622269).

The spelling of 6401223 in words is "six million, four hundred one thousand, two hundred twenty-three".