6557872 has 10 divisors (see below), whose sum is σ = 12705908. Its totient is φ = 3278928.

The previous prime is 6557867. The next prime is 6557939. The reversal of 6557872 is 2787556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204918 + ... + 204949.

Almost surely, 2^6557872 is an apocalyptic number.

It is an amenable number.

6557872 is a deficient number, since it is larger than the sum of its proper divisors (6148036).

6557872 is a wasteful number, since it uses less digits than its factorization.

6557872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409875 (or 409869 counting only the distinct ones).

The product of its digits is 117600, while the sum is 40.

The square root of 6557872 is about 2560.8342390713. The cubic root of 6557872 is about 187.1777885352.

The spelling of 6557872 in words is "six million, five hundred fifty-seven thousand, eight hundred seventy-two".