6686028 has 18 divisors (see below), whose sum is σ = 16900884. Its totient is φ = 2228664.

The previous prime is 6685969. The next prime is 6686041. The reversal of 6686028 is 8206866.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 185723 = 6686028 / (6 + 6 + 8 + 6 + 0 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 6685983 and 6686001.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92826 + ... + 92897.

It is an arithmetic number, because the mean of its divisors is an integer number (938938).

Almost surely, 2^6686028 is an apocalyptic number.

It is an amenable number.

6686028 is an abundant number, since it is smaller than the sum of its proper divisors (10214856).

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

6686028 is a wasteful number, since it uses less digits than its factorization.

6686028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185733 (or 185728 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 6686028 is about 2585.7354853117. The cubic root of 6686028 is about 188.3892268036.

The spelling of 6686028 in words is "six million, six hundred eighty-six thousand, twenty-eight".