1328659 has 4 divisors (see below), whose sum is σ = 1332720. Its totient is φ = 1324600.

The previous prime is 1328653. The next prime is 1328671. The reversal of 1328659 is 9568231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1328659 - 2⁷ = 1328531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1328653) 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, 1492 + ... + 2209.

It is an arithmetic number, because the mean of its divisors is an integer number (333180).

2^1328659 is an apocalyptic number.

1328659 is a deficient number, since it is larger than the sum of its proper divisors (4061).

1328659 is an equidigital number, since it uses as much as digits as its factorization.

1328659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060.

The product of its digits is 12960, while the sum is 34.

The square root of 1328659 is about 1152.6747156071. The cubic root of 1328659 is about 109.9354717957.

The spelling of 1328659 in words is "one million, three hundred twenty-eight thousand, six hundred fifty-nine".