11661396 has 12 divisors (see below), whose sum is σ = 27209952. Its totient is φ = 3887128.

The previous prime is 11661379. The next prime is 11661407. The reversal of 11661396 is 69316611.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485880 + ... + 485903.

It is an arithmetic number, because the mean of its divisors is an integer number (2267496).

Almost surely, 2^11661396 is an apocalyptic number.

It is an amenable number.

11661396 is an abundant number, since it is smaller than the sum of its proper divisors (15548556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11661396 is a wasteful number, since it uses less digits than its factorization.

11661396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971790 (or 971788 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 11661396 is about 3414.8786215618. The cubic root of 11661396 is about 226.7689110048.

The spelling of 11661396 in words is "eleven million, six hundred sixty-one thousand, three hundred ninety-six".