6691128 has 32 divisors (see below), whose sum is σ = 16934400. Its totient is φ = 2202848.

The previous prime is 6691099. The next prime is 6691129. The reversal of 6691128 is 8211966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6691129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313 + ... + 3671.

It is an arithmetic number, because the mean of its divisors is an integer number (529200).

Almost surely, 2^6691128 is an apocalyptic number.

It is an amenable number.

6691128 is an abundant number, since it is smaller than the sum of its proper divisors (10243272).

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

6691128 is a wasteful number, since it uses less digits than its factorization.

6691128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451 (or 3447 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 6691128 is about 2586.7214770825. The cubic root of 6691128 is about 188.4371147708.

The spelling of 6691128 in words is "six million, six hundred ninety-one thousand, one hundred twenty-eight".