1326491 has 2 divisors, whose sum is σ = 1326492. Its totient is φ = 1326490.

The previous prime is 1326467. The next prime is 1326499. The reversal of 1326491 is 1946231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1326491 - 2⁶ = 1326427 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1326491.

It is not a weakly prime, because it can be changed into another prime (1326499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663245 + 663246.

It is an arithmetic number, because the mean of its divisors is an integer number (663246).

2^1326491 is an apocalyptic number.

1326491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326491 is an equidigital number, since it uses as much as digits as its factorization.

1326491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 1326491 is about 1151.7339102414. The cubic root of 1326491 is about 109.8756445927.

The spelling of 1326491 in words is "one million, three hundred twenty-six thousand, four hundred ninety-one".