1366111 has 6 divisors (see below), whose sum is σ = 1390736. Its totient is φ = 1341900.

The previous prime is 1366109. The next prime is 1366117. The reversal of 1366111 is 1116631.

It is not a de Polignac number, because 1366111 - 2¹ = 1366109 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4906 + ... + 5176.

2^1366111 is an apocalyptic number.

1366111 is a deficient number, since it is larger than the sum of its proper divisors (24625).

1366111 is an frugal number, since it uses more digits than its factorization.

1366111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 342 counting only the distinct ones).

The product of its digits is 108, while the sum is 19.

The square root of 1366111 is about 1168.8075119540. The cubic root of 1366111 is about 110.9588625527.

The spelling of 1366111 in words is "one million, three hundred sixty-six thousand, one hundred eleven".