1326881 has 2 divisors, whose sum is σ = 1326882. Its totient is φ = 1326880.

The previous prime is 1326869. The next prime is 1326887. The reversal of 1326881 is 1886231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 672400 + 654481 = 820^2 + 809^2 .

It is an emirp because it is prime and its reverse (1886231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1326881 - 2⁶ = 1326817 is a prime.

It is a super-2 number, since 2×1326881² = 3521226376322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1326887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663440 + 663441.

It is an arithmetic number, because the mean of its divisors is an integer number (663441).

2^1326881 is an apocalyptic number.

It is an amenable number.

1326881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326881 is an equidigital number, since it uses as much as digits as its factorization.

1326881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 29.

The square root of 1326881 is about 1151.9032077393. The cubic root of 1326881 is about 109.8864116723.

The spelling of 1326881 in words is "one million, three hundred twenty-six thousand, eight hundred eighty-one".