11965648 has 10 divisors (see below), whose sum is σ = 23183474. Its totient is φ = 5982816.

The previous prime is 11965643. The next prime is 11965669. The reversal of 11965648 is 84656911.

It can be written as a sum of positive squares in only one way, i.e., 7997584 + 3968064 = 2828^2 + 1992^2 .

It is a super-3 number, since 3×11965648³ (a number of 22 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11965648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11965643) by changing a digit.

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 as a sum of consecutive naturals, namely, 373911 + ... + 373942.

Almost surely, 2^11965648 is an apocalyptic number.

It is an amenable number.

11965648 is a deficient number, since it is larger than the sum of its proper divisors (11217826).

11965648 is an equidigital number, since it uses as much as digits as its factorization.

11965648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747861 (or 747855 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 11965648 is about 3459.1397774591. The cubic root of 11965648 is about 228.7241773632.

The spelling of 11965648 in words is "eleven million, nine hundred sixty-five thousand, six hundred forty-eight".