6663123 has 12 divisors (see below), whose sum is σ = 10043280. Its totient is φ = 4248816.

The previous prime is 6663121. The next prime is 6663179. The reversal of 6663123 is 3213666.

It is not a de Polignac number, because 6663123 - 2¹ = 6663121 is a prime.

It is a super-2 number, since 2×6663123² = 88794416226258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6663121) 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, 15888 + ... + 16301.

It is an arithmetic number, because the mean of its divisors is an integer number (836940).

Almost surely, 2^6663123 is an apocalyptic number.

6663123 is a deficient number, since it is larger than the sum of its proper divisors (3380157).

6663123 is a wasteful number, since it uses less digits than its factorization.

6663123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32218 (or 32215 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 6663123 is about 2581.3025781570. The cubic root of 6663123 is about 188.1738526858.

Adding to 6663123 its reverse (3213666), we get a palindrome (9876789).

It can be divided in two parts, 6663 and 123, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 6663123 in words is "six million, six hundred sixty-three thousand, one hundred twenty-three".