6663670 has 24 divisors (see below), whose sum is σ = 12991536. Its totient is φ = 2459808.

The previous prime is 6663653. The next prime is 6663673. The reversal of 6663670 is 763666.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663673) 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, 282 + ... + 3661.

It is an arithmetic number, because the mean of its divisors is an integer number (541314).

Almost surely, 2^6663670 is an apocalyptic number.

6663670 is a deficient number, since it is larger than the sum of its proper divisors (6327866).

6663670 is a wasteful number, since it uses less digits than its factorization.

6663670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976 (or 3963 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 6663670 is about 2581.4085302408. The cubic root of 6663670 is about 188.1790018369.

It can be divided in two parts, 66 and 63670, that added together give a palindrome (63736).

The spelling of 6663670 in words is "six million, six hundred sixty-three thousand, six hundred seventy".