6663140 has 48 divisors (see below), whose sum is σ = 15773184. Its totient is φ = 2342400.

The previous prime is 6663121. The next prime is 6663179. The reversal of 6663140 is 413666.

It is a super-3 number, since 3×6663140³ (a number of 21 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6332 + ... + 7308.

It is an arithmetic number, because the mean of its divisors is an integer number (328608).

Almost surely, 2^6663140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6663140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7886592).

6663140 is an abundant number, since it is smaller than the sum of its proper divisors (9110044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6663140 is a wasteful number, since it uses less digits than its factorization.

6663140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028 (or 1026 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 6663140 is about 2581.3058710660. The cubic root of 6663140 is about 188.1740127185.

The spelling of 6663140 in words is "six million, six hundred sixty-three thousand, one hundred forty".