11671081 has 2 divisors, whose sum is σ = 11671082. Its totient is φ = 11671080.

The previous prime is 11671067. The next prime is 11671091. The reversal of 11671081 is 18017611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11669056 + 2025 = 3416^2 + 45^2 .

It is a cyclic number.

It is not a de Polignac number, because 11671081 - 2⁹ = 11670569 is a prime.

It is a super-2 number, since 2×11671081² = 272428263417122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11671001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5835540 + 5835541.

It is an arithmetic number, because the mean of its divisors is an integer number (5835541).

Almost surely, 2^11671081 is an apocalyptic number.

It is an amenable number.

11671081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11671081 is an equidigital number, since it uses as much as digits as its factorization.

11671081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 25.

The square root of 11671081 is about 3416.2963864396. The cubic root of 11671081 is about 226.8316721920.

Adding to 11671081 its reverse (18017611), we get a palindrome (29688692).

The spelling of 11671081 in words is "eleven million, six hundred seventy-one thousand, eighty-one".