6665224 has 16 divisors (see below), whose sum is σ = 13232700. Its totient is φ = 3136512.

The previous prime is 6665213. The next prime is 6665231. The reversal of 6665224 is 4225666.

It can be written as a sum of positive squares in 2 ways, for example, as 6340324 + 324900 = 2518^2 + 570^2 .

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, 24369 + ... + 24640.

Almost surely, 2^6665224 is an apocalyptic number.

It is an amenable number.

6665224 is a deficient number, since it is larger than the sum of its proper divisors (6567476).

6665224 is a wasteful number, since it uses less digits than its factorization.

6665224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49032 (or 49028 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 6665224 is about 2581.7095111573. The cubic root of 6665224 is about 188.1936287837.

It can be divided in two parts, 6665 and 224, that added together give a square (6889 = 83²).

The spelling of 6665224 in words is "six million, six hundred sixty-five thousand, two hundred twenty-four".