11661772 has 12 divisors (see below), whose sum is σ = 20883016. Its totient is φ = 5695200.

The previous prime is 11661761. The next prime is 11661773. The reversal of 11661772 is 27716611.

It is a hoax number, since the sum of its digits (31) 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 (11661773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33729 + ... + 34072.

Almost surely, 2^11661772 is an apocalyptic number.

It is an amenable number.

11661772 is a deficient number, since it is larger than the sum of its proper divisors (9221244).

11661772 is a wasteful number, since it uses less digits than its factorization.

11661772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67848 (or 67846 counting only the distinct ones).

The product of its digits is 3528, while the sum is 31.

The square root of 11661772 is about 3414.9336743193. The cubic root of 11661772 is about 226.7713482257.

The spelling of 11661772 in words is "eleven million, six hundred sixty-one thousand, seven hundred seventy-two".