669468 has 24 divisors (see below), whose sum is σ = 1596672. Its totient is φ = 218224.

The previous prime is 669463. The next prime is 669479. The reversal of 669468 is 864966.

669468 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 (669463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30 + ... + 1157.

It is an arithmetic number, because the mean of its divisors is an integer number (66528).

2⁶⁶⁹⁴⁶⁸ is an apocalyptic number.

It is an amenable number.

669468 is an abundant number, since it is smaller than the sum of its proper divisors (927204).

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

669468 is a wasteful number, since it uses less digits than its factorization.

669468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241 (or 1239 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 669468 is about 818.2102419305. The cubic root of 669468 is about 87.4802349915.

The spelling of 669468 in words is "six hundred sixty-nine thousand, four hundred sixty-eight".