669248 has 14 divisors (see below), whose sum is σ = 1328166. Its totient is φ = 334592.

The previous prime is 669247. The next prime is 669271. The reversal of 669248 is 842966.

It can be written as a sum of positive squares in only one way, i.e., 652864 + 16384 = 808^2 + 128^2 .

It is not an unprimeable number, because it can be changed into a prime (669241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5165 + ... + 5292.

It is an arithmetic number, because the mean of its divisors is an integer number (94869).

2⁶⁶⁹²⁴⁸ is an apocalyptic number.

It is an amenable number.

669248 is a deficient number, since it is larger than the sum of its proper divisors (658918).

669248 is a wasteful number, since it uses less digits than its factorization.

669248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10469 (or 10459 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 669248 is about 818.0757911098. The cubic root of 669248 is about 87.4706513817.

The spelling of 669248 in words is "six hundred sixty-nine thousand, two hundred forty-eight".