6670660 has 12 divisors (see below), whose sum is σ = 14008428. Its totient is φ = 2668256.

The previous prime is 6670649. The next prime is 6670661. The reversal of 6670660 is 660766.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3928324 + 2742336 = 1982^2 + 1656^2 .

It is not an unprimeable number, because it can be changed into a prime (6670661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166747 + ... + 166786.

It is an arithmetic number, because the mean of its divisors is an integer number (1167369).

Almost surely, 2^6670660 is an apocalyptic number.

It is an amenable number.

6670660 is an abundant number, since it is smaller than the sum of its proper divisors (7337768).

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

6670660 is a wasteful number, since it uses less digits than its factorization.

6670660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333542 (or 333540 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 6670660 is about 2582.7620873785. The cubic root of 6670660 is about 188.2447769809.

It can be divided in two parts, 66706 and 60, that added together give a palindrome (66766).

The spelling of 6670660 in words is "six million, six hundred seventy thousand, six hundred sixty".