1328611 has 2 divisors, whose sum is σ = 1328612. Its totient is φ = 1328610.

The previous prime is 1328603. The next prime is 1328617. The reversal of 1328611 is 1168231.

It is a strong prime.

It is an emirp because it is prime and its reverse (1168231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1328611 - 2³ = 1328603 is a prime.

It is not a weakly prime, because it can be changed into another prime (1328617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664305 + 664306.

It is an arithmetic number, because the mean of its divisors is an integer number (664306).

2^1328611 is an apocalyptic number.

1328611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328611 is an equidigital number, since it uses as much as digits as its factorization.

1328611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 22.

The square root of 1328611 is about 1152.6538942805. The cubic root of 1328611 is about 109.9341479130.

The spelling of 1328611 in words is "one million, three hundred twenty-eight thousand, six hundred eleven".