11961718 has 4 divisors (see below), whose sum is σ = 17942580. Its totient is φ = 5980858.

The previous prime is 11961683. The next prime is 11961721. The reversal of 11961718 is 81716911.

It is a semiprime because it is the product of two primes.

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, 2990428 + ... + 2990431.

It is an arithmetic number, because the mean of its divisors is an integer number (4485645).

Almost surely, 2^11961718 is an apocalyptic number.

11961718 is a deficient number, since it is larger than the sum of its proper divisors (5980862).

11961718 is an equidigital number, since it uses as much as digits as its factorization.

11961718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5980861.

The product of its digits is 3024, while the sum is 34.

The square root of 11961718 is about 3458.5716705021. The cubic root of 11961718 is about 228.6991338819.

The spelling of 11961718 in words is "eleven million, nine hundred sixty-one thousand, seven hundred eighteen".