6557642 has 32 divisors (see below), whose sum is σ = 12241152. Its totient is φ = 2565504.

The previous prime is 6557623. The next prime is 6557651. The reversal of 6557642 is 2467556.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24803 + ... + 25065.

It is an arithmetic number, because the mean of its divisors is an integer number (382536).

Almost surely, 2^6557642 is an apocalyptic number.

6557642 is a deficient number, since it is larger than the sum of its proper divisors (5683510).

6557642 is a wasteful number, since it uses less digits than its factorization.

6557642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422.

The product of its digits is 50400, while the sum is 35.

The square root of 6557642 is about 2560.7893314367. The cubic root of 6557642 is about 187.1756002545.

The spelling of 6557642 in words is "six million, five hundred fifty-seven thousand, six hundred forty-two".