11691956 has 6 divisors (see below), whose sum is σ = 20460930. Its totient is φ = 5845976.

The previous prime is 11691949. The next prime is 11691983. The reversal of 11691956 is 65919611.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6584356 + 5107600 = 2566^2 + 2260^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1461491 + ... + 1461498.

It is an arithmetic number, because the mean of its divisors is an integer number (3410155).

Almost surely, 2^11691956 is an apocalyptic number.

It is an amenable number.

11691956 is a deficient number, since it is larger than the sum of its proper divisors (8768974).

11691956 is a wasteful number, since it uses less digits than its factorization.

11691956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922993 (or 2922991 counting only the distinct ones).

The product of its digits is 14580, while the sum is 38.

The square root of 11691956 is about 3419.3502306725. The cubic root of 11691956 is about 226.9668293630.

It can be divided in two parts, 1169 and 1956, that added together give a 5-th power (3125 = 5⁵).

The spelling of 11691956 in words is "eleven million, six hundred ninety-one thousand, nine hundred fifty-six".