1320727 has 2 divisors, whose sum is σ = 1320728. Its totient is φ = 1320726.

The previous prime is 1320721. The next prime is 1320731. The reversal of 1320727 is 7270231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1320698 and 1320707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320721) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660363 + 660364.

It is an arithmetic number, because the mean of its divisors is an integer number (660364).

2^1320727 is an apocalyptic number.

1320727 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320727 is an equidigital number, since it uses as much as digits as its factorization.

1320727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 1320727 is about 1149.2288718963. The cubic root of 1320727 is about 109.7162660110.

Adding to 1320727 its reverse (7270231), we get a palindrome (8590958).

The spelling of 1320727 in words is "one million, three hundred twenty thousand, seven hundred twenty-seven".