1356811 has 2 divisors, whose sum is σ = 1356812. Its totient is φ = 1356810.

The previous prime is 1356763. The next prime is 1356829. The reversal of 1356811 is 1186531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1356811 - 2¹³ = 1348619 is a prime.

It is not a weakly prime, because it can be changed into another prime (1356871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678405 + 678406.

It is an arithmetic number, because the mean of its divisors is an integer number (678406).

2^1356811 is an apocalyptic number.

1356811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356811 is an equidigital number, since it uses as much as digits as its factorization.

1356811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 25.

The square root of 1356811 is about 1164.8223040447. The cubic root of 1356811 is about 110.7064994673.

Adding to 1356811 its product of digits (720), we get a palindrome (1357531).

The spelling of 1356811 in words is "one million, three hundred fifty-six thousand, eight hundred eleven".