6691144 has 32 divisors (see below), whose sum is σ = 13115520. Its totient is φ = 3197376.

The previous prime is 6691129. The next prime is 6691147. The reversal of 6691144 is 4411966.

It is not an unprimeable number, because it can be changed into a prime (6691147) 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, 18049 + ... + 18415.

It is an arithmetic number, because the mean of its divisors is an integer number (409860).

Almost surely, 2^6691144 is an apocalyptic number.

It is an amenable number.

6691144 is a deficient number, since it is larger than the sum of its proper divisors (6424376).

6691144 is a wasteful number, since it uses less digits than its factorization.

6691144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 465 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 6691144 is about 2586.7245697986. The cubic root of 6691144 is about 188.4372649693.

The spelling of 6691144 in words is "six million, six hundred ninety-one thousand, one hundred forty-four".