11111669 has 6 divisors (see below), whose sum is σ = 11513430. Its totient is φ = 10711176.

The previous prime is 11111651. The next prime is 11111677. The reversal of 11111669 is 96611111.

It can be written as a sum of positive squares in only one way, i.e., 9579025 + 1532644 = 3095^2 + 1238^2 .

It is not a de Polignac number, because 11111669 - 2⁸ = 11111413 is a prime.

It is a super-2 number, since 2×11111669² = 246938375931122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111069) 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 in 5 ways as a sum of consecutive naturals, for example, 17642 + ... + 18260.

It is an arithmetic number, because the mean of its divisors is an integer number (1918905).

Almost surely, 2^11111669 is an apocalyptic number.

It is an amenable number.

11111669 is a deficient number, since it is larger than the sum of its proper divisors (401761).

11111669 is an frugal number, since it uses more digits than its factorization.

11111669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267 (or 648 counting only the distinct ones).

The product of its digits is 324, while the sum is 26.

The square root of 11111669 is about 3333.4170156163. The cubic root of 11111669 is about 223.1480513236.

The spelling of 11111669 in words is "eleven million, one hundred eleven thousand, six hundred sixty-nine".