11616661 has 32 divisors (see below), whose sum is σ = 15040512. Its totient is φ = 8743680.

The previous prime is 11616659. The next prime is 11616673. The reversal of 11616661 is 16661611.

11616661 is nontrivially palindromic in base 6.

11616661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11616661 - 2¹ = 11616659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11616601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173350 + ... + 173416.

It is an arithmetic number, because the mean of its divisors is an integer number (470016).

Almost surely, 2^11616661 is an apocalyptic number.

It is an amenable number.

11616661 is a deficient number, since it is larger than the sum of its proper divisors (3423851).

11616661 is a wasteful number, since it uses less digits than its factorization.

11616661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169.

The product of its digits is 1296, while the sum is 28.

The square root of 11616661 is about 3408.3223145706. The cubic root of 11616661 is about 226.4785653509.

The spelling of 11616661 in words is "eleven million, six hundred sixteen thousand, six hundred sixty-one".