1329668 has 6 divisors (see below), whose sum is σ = 2326926. Its totient is φ = 664832.

The previous prime is 1329661. The next prime is 1329673. The reversal of 1329668 is 8669231.

It can be written as a sum of positive squares in only one way, i.e., 1183744 + 145924 = 1088^2 + 382^2 .

It is not an unprimeable number, because it can be changed into a prime (1329661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166205 + ... + 166212.

It is an arithmetic number, because the mean of its divisors is an integer number (387821).

2^1329668 is an apocalyptic number.

It is an amenable number.

1329668 is a deficient number, since it is larger than the sum of its proper divisors (997258).

1329668 is a wasteful number, since it uses less digits than its factorization.

1329668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332421 (or 332419 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 1329668 is about 1153.1123102283. The cubic root of 1329668 is about 109.9632935377.

The spelling of 1329668 in words is "one million, three hundred twenty-nine thousand, six hundred sixty-eight".