11156669 has 2 divisors, whose sum is σ = 11156670. Its totient is φ = 11156668.

The previous prime is 11156657. The next prime is 11156671. The reversal of 11156669 is 96665111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8791225 + 2365444 = 2965^2 + 1538^2 .

It is a cyclic number.

It is not a de Polignac number, because 11156669 - 2⁴ = 11156653 is a prime.

It is a super-2 number, since 2×11156669² = 248942526351122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 11156671, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11156689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5578334 + 5578335.

It is an arithmetic number, because the mean of its divisors is an integer number (5578335).

Almost surely, 2^11156669 is an apocalyptic number.

It is an amenable number.

11156669 is a deficient number, since it is larger than the sum of its proper divisors (1).

11156669 is an equidigital number, since it uses as much as digits as its factorization.

11156669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 11156669 is about 3340.1600261065. The cubic root of 11156669 is about 223.4488803338.

The spelling of 11156669 in words is "eleven million, one hundred fifty-six thousand, six hundred sixty-nine".