6669662224 has 45 divisors (see below), whose sum is σ = 13738769751. Its totient is φ = 3136051200.

The previous prime is 6669662221. The next prime is 6669662243. The reversal of 6669662224 is 4222669666.

The square root of 6669662224 is 81668.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1257411600 + 5412250624 = 35460^2 + 73568^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6669662221) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5552824 + ... + 5554024.

Almost surely, 2^6669662224 is an apocalyptic number.

6669662224 is the 81668-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6669662224

6669662224 is an abundant number, since it is smaller than the sum of its proper divisors (7069107527).

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

6669662224 is an equidigital number, since it uses as much as digits as its factorization.

6669662224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444 (or 1220 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 49.

The cubic root of 6669662224 is about 1882.3539082890.

Multiplying 6669662224 by its sum of digits (49), we get a square (326813448976 = 571676²).

The spelling of 6669662224 in words is "six billion, six hundred sixty-nine million, six hundred sixty-two thousand, two hundred twenty-four".