11661116 has 24 divisors (see below), whose sum is σ = 21732480. Its totient is φ = 5455872.

The previous prime is 11661101. The next prime is 11661119. The reversal of 11661116 is 61116611.

It is a junction number, because it is equal to n+sod(n) for n = 11661091 and 11661100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14780 + ... + 15548.

It is an arithmetic number, because the mean of its divisors is an integer number (905520).

Almost surely, 2^11661116 is an apocalyptic number.

It is an amenable number.

11661116 is a deficient number, since it is larger than the sum of its proper divisors (10071364).

11661116 is a wasteful number, since it uses less digits than its factorization.

11661116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013 (or 1011 counting only the distinct ones).

The product of its digits is 216, while the sum is 23.

The square root of 11661116 is about 3414.8376242510. The cubic root of 11661116 is about 226.7670960190.

Adding to 11661116 its reverse (61116611), we get a palindrome (72777727).

The spelling of 11661116 in words is "eleven million, six hundred sixty-one thousand, one hundred sixteen".