1228693 has 2 divisors, whose sum is σ = 1228694. Its totient is φ = 1228692.

The previous prime is 1228691. The next prime is 1228741. The reversal of 1228693 is 3968221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1067089 + 161604 = 1033^2 + 402^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228693 - 2¹ = 1228691 is a prime.

Together with 1228691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614346 + 614347.

It is an arithmetic number, because the mean of its divisors is an integer number (614347).

2^1228693 is an apocalyptic number.

It is an amenable number.

1228693 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228693 is an equidigital number, since it uses as much as digits as its factorization.

1228693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 1228693 is about 1108.4642529193. The cubic root of 1228693 is about 107.1061630112.

The spelling of 1228693 in words is "one million, two hundred twenty-eight thousand, six hundred ninety-three".