6665856224 has 12 divisors (see below), whose sum is σ = 13123404504. Its totient is φ = 3332928096.

The previous prime is 6665856157. The next prime is 6665856257. The reversal of 6665856224 is 4226585666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104153972 + ... + 104154035.

It is an arithmetic number, because the mean of its divisors is an integer number (1093617042).

Almost surely, 2^6665856224 is an apocalyptic number.

It is an amenable number.

6665856224 is a deficient number, since it is larger than the sum of its proper divisors (6457548280).

6665856224 is a wasteful number, since it uses less digits than its factorization.

6665856224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208308017 (or 208308009 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 50.

The square root of 6665856224 is about 81644.6950144343. The cubic root of 6665856224 is about 1881.9957890965.

The spelling of 6665856224 in words is "six billion, six hundred sixty-five million, eight hundred fifty-six thousand, two hundred twenty-four".