11610881 has 16 divisors (see below), whose sum is σ = 13104000. Its totient is φ = 10222848.

The previous prime is 11610871. The next prime is 11610889. The reversal of 11610881 is 18801611.

It is not a de Polignac number, because 11610881 - 2¹⁸ = 11348737 is a prime.

It is a super-2 number, since 2×11610881² = 269625115192322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11610881.

It is not an unprimeable number, because it can be changed into a prime (11610889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33095 + ... + 33443.

It is an arithmetic number, because the mean of its divisors is an integer number (819000).

Almost surely, 2^11610881 is an apocalyptic number.

It is an amenable number.

11610881 is a deficient number, since it is larger than the sum of its proper divisors (1493119).

11610881 is a wasteful number, since it uses less digits than its factorization.

11610881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 384, while the sum is 26.

The square root of 11610881 is about 3407.4742845691. The cubic root of 11610881 is about 226.4409968023.

The spelling of 11610881 in words is "eleven million, six hundred ten thousand, eight hundred eighty-one".