1366169 has 10 divisors (see below), whose sum is σ = 1596570. Its totient is φ = 1168944.

The previous prime is 1366163. The next prime is 1366187. The reversal of 1366169 is 9616631.

It can be written as a sum of positive squares in only one way, i.e., 960400 + 405769 = 980^2 + 637^2 .

It is not a de Polignac number, because 1366169 - 2⁸ = 1365913 is a prime.

It is a super-2 number, since 2×1366169² = 3732835473122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1366163) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2117 + ... + 2685.

It is an arithmetic number, because the mean of its divisors is an integer number (159657).

2^1366169 is an apocalyptic number.

It is an amenable number.

1366169 is a deficient number, since it is larger than the sum of its proper divisors (230401).

1366169 is an frugal number, since it uses more digits than its factorization.

1366169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 576 counting only the distinct ones).

The product of its digits is 5832, while the sum is 32.

The square root of 1366169 is about 1168.8323233039. The cubic root of 1366169 is about 110.9604328309.

The spelling of 1366169 in words is "one million, three hundred sixty-six thousand, one hundred sixty-nine".