6556938 has 32 divisors (see below), whose sum is σ = 13953600. Its totient is φ = 2048256.

The previous prime is 6556937. The next prime is 6556961. The reversal of 6556938 is 8396556.

It is a self number, because there is not a number n which added to its sum of digits gives 6556938.

It is not an unprimeable number, because it can be changed into a prime (6556937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12628 + ... + 13136.

It is an arithmetic number, because the mean of its divisors is an integer number (436050).

Almost surely, 2^6556938 is an apocalyptic number.

6556938 is an abundant number, since it is smaller than the sum of its proper divisors (7396662).

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

6556938 is a wasteful number, since it uses less digits than its factorization.

6556938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646.

The product of its digits is 194400, while the sum is 42.

The square root of 6556938 is about 2560.6518701299. The cubic root of 6556938 is about 187.1689018946.

The spelling of 6556938 in words is "six million, five hundred fifty-six thousand, nine hundred thirty-eight".