1338667 has 4 divisors (see below), whose sum is σ = 1460376. Its totient is φ = 1216960.

The previous prime is 1338661. The next prime is 1338671. The reversal of 1338667 is 7668331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7668331 = 11 ⋅697121.

It is a cyclic number.

It is not a de Polignac number, because 1338667 - 2⁷ = 1338539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60838 + ... + 60859.

It is an arithmetic number, because the mean of its divisors is an integer number (365094).

2^1338667 is an apocalyptic number.

1338667 is a deficient number, since it is larger than the sum of its proper divisors (121709).

1338667 is a wasteful number, since it uses less digits than its factorization.

1338667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121708.

The product of its digits is 18144, while the sum is 34.

The square root of 1338667 is about 1157.0077787120. The cubic root of 1338667 is about 110.2108078635.

The spelling of 1338667 in words is "one million, three hundred thirty-eight thousand, six hundred sixty-seven".