669146224 has 20 divisors (see below), whose sum is σ = 1307947536. Its totient is φ = 331611392.

The previous prime is 669146207. The next prime is 669146227. The reversal of 669146224 is 422641966.

It is a happy number.

669146224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669146227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183244 + ... + 186859.

Almost surely, 2^669146224 is an apocalyptic number.

It is an amenable number.

669146224 is a deficient number, since it is larger than the sum of its proper divisors (638801312).

669146224 is a wasteful number, since it uses less digits than its factorization.

669146224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370224 (or 370218 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 669146224 is about 25867.8608315415. The cubic root of 669146224 is about 874.6621711899.

The spelling of 669146224 in words is "six hundred sixty-nine million, one hundred forty-six thousand, two hundred twenty-four".