1338561 has 12 divisors (see below), whose sum is σ = 2209792. Its totient is φ = 764856.

The previous prime is 1338559. The next prime is 1338581. The reversal of 1338561 is 1658331.

It is not a de Polignac number, because 1338561 - 2¹ = 1338559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10561 + ... + 10686.

2^1338561 is an apocalyptic number.

It is an amenable number.

1338561 is a deficient number, since it is larger than the sum of its proper divisors (871231).

1338561 is a wasteful number, since it uses less digits than its factorization.

1338561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21260 (or 21257 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1338561 is about 1156.9619699886. The cubic root of 1338561 is about 110.2078988369.

The spelling of 1338561 in words is "one million, three hundred thirty-eight thousand, five hundred sixty-one".