11961717 has 8 divisors (see below), whose sum is σ = 16499040. Its totient is φ = 7699440.

The previous prime is 11961683. The next prime is 11961721. The reversal of 11961717 is 71716911.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11961717 - 2⁷ = 11961589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11961797) 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 7 ways as a sum of consecutive naturals, for example, 68659 + ... + 68832.

It is an arithmetic number, because the mean of its divisors is an integer number (2062380).

Almost surely, 2^11961717 is an apocalyptic number.

It is an amenable number.

11961717 is a deficient number, since it is larger than the sum of its proper divisors (4537323).

11961717 is a wasteful number, since it uses less digits than its factorization.

11961717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137523.

The product of its digits is 2646, while the sum is 33.

The square root of 11961717 is about 3458.5715259338. The cubic root of 11961717 is about 228.6991275088.

The spelling of 11961717 in words is "eleven million, nine hundred sixty-one thousand, seven hundred seventeen".