11963641 has 2 divisors, whose sum is σ = 11963642. Its totient is φ = 11963640.

The previous prime is 11963639. The next prime is 11963663. The reversal of 11963641 is 14636911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11289600 + 674041 = 3360^2 + 821^2 .

It is a cyclic number.

It is not a de Polignac number, because 11963641 - 2¹ = 11963639 is a prime.

Together with 11963639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11963041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5981820 + 5981821.

It is an arithmetic number, because the mean of its divisors is an integer number (5981821).

Almost surely, 2^11963641 is an apocalyptic number.

It is an amenable number.

11963641 is a deficient number, since it is larger than the sum of its proper divisors (1).

11963641 is an equidigital number, since it uses as much as digits as its factorization.

11963641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 11963641 is about 3458.8496642670. The cubic root of 11963641 is about 228.7113886675.

The spelling of 11963641 in words is "eleven million, nine hundred sixty-three thousand, six hundred forty-one".