6566838 has 8 divisors (see below), whose sum is σ = 13133688. Its totient is φ = 2188944.

The previous prime is 6566827. The next prime is 6566849. The reversal of 6566838 is 8386656.

6566838 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6566827) and next prime (6566849).

It is a sphenic number, since it is the product of 3 distinct primes.

6566838 is an admirable number.

It is a super-2 number, since 2×6566838² = 86246722636488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6566838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547231 + ... + 547242.

It is an arithmetic number, because the mean of its divisors is an integer number (1641711).

Almost surely, 2^6566838 is an apocalyptic number.

6566838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6566838 is a wasteful number, since it uses less digits than its factorization.

6566838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094478.

The product of its digits is 207360, while the sum is 42.

The square root of 6566838 is about 2562.5842425177. The cubic root of 6566838 is about 187.2630535825.

The spelling of 6566838 in words is "six million, five hundred sixty-six thousand, eight hundred thirty-eight".