11709081 has 12 divisors (see below), whose sum is σ = 17200560. Its totient is φ = 7673400.

The previous prime is 11709079. The next prime is 11709101. The reversal of 11709081 is 18090711.

11709081 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11709081 - 2¹ = 11709079 is a prime.

It is a super-2 number, since 2×11709081² = 274205155729122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (11709281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10495 + ... + 11556.

It is an arithmetic number, because the mean of its divisors is an integer number (1433380).

Almost surely, 2^11709081 is an apocalyptic number.

It is an amenable number.

11709081 is a deficient number, since it is larger than the sum of its proper divisors (5491479).

11709081 is a wasteful number, since it uses less digits than its factorization.

11709081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22116 (or 22113 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 11709081 is about 3421.8534451376. The cubic root of 11709081 is about 227.0775867319.

Adding to 11709081 its reverse (18090711), we get a palindrome (29799792).

The spelling of 11709081 in words is "eleven million, seven hundred nine thousand, eighty-one".