6691244 has 24 divisors (see below), whose sum is σ = 13658400. Its totient is φ = 2867088.

The previous prime is 6691231. The next prime is 6691259. The reversal of 6691244 is 4421966.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6691244.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067 + ... + 3810.

It is an arithmetic number, because the mean of its divisors is an integer number (569100).

Almost surely, 2^6691244 is an apocalyptic number.

It is an amenable number.

6691244 is an abundant number, since it is smaller than the sum of its proper divisors (6967156).

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

6691244 is a wasteful number, since it uses less digits than its factorization.

6691244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4902 (or 4886 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 6691244 is about 2586.7438991906. The cubic root of 6691244 is about 188.4382037043.

It can be divided in two parts, 669124 and 4, that multiplied together give a square (2676496 = 1636²).

The spelling of 6691244 in words is "six million, six hundred ninety-one thousand, two hundred forty-four".