1356269 has 2 divisors, whose sum is σ = 1356270. Its totient is φ = 1356268.

The previous prime is 1356259. The next prime is 1356319. The reversal of 1356269 is 9626531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1075369 + 280900 = 1037^2 + 530^2 .

It is an emirp because it is prime and its reverse (9626531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1356269 - 2⁴ = 1356253 is a prime.

It is a super-2 number, since 2×1356269² = 3678931200722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678134 + 678135.

It is an arithmetic number, because the mean of its divisors is an integer number (678135).

2^1356269 is an apocalyptic number.

It is an amenable number.

1356269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356269 is an equidigital number, since it uses as much as digits as its factorization.

1356269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 32.

The square root of 1356269 is about 1164.5896272937. The cubic root of 1356269 is about 110.6917563394.

It can be divided in two parts, 13562 and 69, that added together give a palindrome (13631).

The spelling of 1356269 in words is "one million, three hundred fifty-six thousand, two hundred sixty-nine".