6646123 has 8 divisors (see below), whose sum is σ = 7419456. Its totient is φ = 5901000.

The previous prime is 6646049. The next prime is 6646153. The reversal of 6646123 is 3216466.

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 6646123 - 2¹³ = 6637931 is a prime.

It is a super-2 number, since 2×6646123² = 88341901862258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6646091 and 6646100.

It is not an unprimeable number, because it can be changed into a prime (6646153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6553 + ... + 7498.

It is an arithmetic number, because the mean of its divisors is an integer number (927432).

Almost surely, 2^6646123 is an apocalyptic number.

6646123 is a deficient number, since it is larger than the sum of its proper divisors (773333).

6646123 is a wasteful number, since it uses less digits than its factorization.

6646123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14105.

The product of its digits is 5184, while the sum is 28.

The square root of 6646123 is about 2578.0075639920. The cubic root of 6646123 is about 188.0136835521.

The spelling of 6646123 in words is "six million, six hundred forty-six thousand, one hundred twenty-three".