6670557 has 12 divisors (see below), whose sum is σ = 9679644. Its totient is φ = 4426560.

The previous prime is 6670553. The next prime is 6670583. The reversal of 6670557 is 7550766.

6670557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 881721 + 5788836 = 939^2 + 2406^2 .

It is not a de Polignac number, because 6670557 - 2² = 6670553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6670553) 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 11 ways as a sum of consecutive naturals, for example, 507 + ... + 3687.

It is an arithmetic number, because the mean of its divisors is an integer number (806637).

Almost surely, 2^6670557 is an apocalyptic number.

It is an amenable number.

6670557 is a deficient number, since it is larger than the sum of its proper divisors (3009087).

6670557 is a wasteful number, since it uses less digits than its factorization.

6670557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420 (or 3417 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 36.

The square root of 6670557 is about 2582.7421474084. The cubic root of 6670557 is about 188.2438080957.

It can be divided in two parts, 6670 and 557, that added together give a palindrome (7227).

The spelling of 6670557 in words is "six million, six hundred seventy thousand, five hundred fifty-seven".