669343456 has 48 divisors (see below), whose sum is σ = 1339511040. Its totient is φ = 329195520.

The previous prime is 669343391. The next prime is 669343459. The reversal of 669343456 is 654343966.

It is a super-3 number, since 3×669343456³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669343459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592300 + ... + 593428.

It is an arithmetic number, because the mean of its divisors is an integer number (27906480).

Almost surely, 2^669343456 is an apocalyptic number.

It is an amenable number.

669343456 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

669343456 is a wasteful number, since it uses less digits than its factorization.

669343456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427 (or 1419 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 46.

The square root of 669343456 is about 25871.6728488902. The cubic root of 669343456 is about 874.7480988076.

The spelling of 669343456 in words is "six hundred sixty-nine million, three hundred forty-three thousand, four hundred fifty-six".