11812961 has 8 divisors (see below), whose sum is σ = 12628224. Its totient is φ = 11022880.

The previous prime is 11812939. The next prime is 11812963. The reversal of 11812961 is 16921811.

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

It is a cyclic number.

It is not a de Polignac number, because 11812961 - 2⁶ = 11812897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11812963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5321 + ... + 7206.

It is an arithmetic number, because the mean of its divisors is an integer number (1578528).

Almost surely, 2^11812961 is an apocalyptic number.

It is an amenable number.

11812961 is a deficient number, since it is larger than the sum of its proper divisors (815263).

11812961 is a wasteful number, since it uses less digits than its factorization.

11812961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12591.

The product of its digits is 864, while the sum is 29.

The square root of 11812961 is about 3436.9988361942. The cubic root of 11812961 is about 227.7471355347.

The spelling of 11812961 in words is "eleven million, eight hundred twelve thousand, nine hundred sixty-one".