6691224 has 16 divisors (see below), whose sum is σ = 16728120. Its totient is φ = 2230400.

The previous prime is 6691219. The next prime is 6691231. The reversal of 6691224 is 4221966.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 6691191 and 6691200.

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, 139377 + ... + 139424.

Almost surely, 2^6691224 is an apocalyptic number.

It is an amenable number.

6691224 is an abundant number, since it is smaller than the sum of its proper divisors (10036896).

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

6691224 is a wasteful number, since it uses less digits than its factorization.

6691224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278810 (or 278806 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 6691224 is about 2586.7400333238. The cubic root of 6691224 is about 188.4380159580.

The spelling of 6691224 in words is "six million, six hundred ninety-one thousand, two hundred twenty-four".