11865648 has 20 divisors (see below), whose sum is σ = 30653048. Its totient is φ = 3955200.

The previous prime is 11865629. The next prime is 11865649. The reversal of 11865648 is 84656811.

It is a super-3 number, since 3×11865648³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11865649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123553 + ... + 123648.

Almost surely, 2^11865648 is an apocalyptic number.

It is an amenable number.

11865648 is an abundant number, since it is smaller than the sum of its proper divisors (18787400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11865648 is a wasteful number, since it uses less digits than its factorization.

11865648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247212 (or 247206 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 11865648 is about 3444.6549899809. The cubic root of 11865648 is about 228.0852251415.

The spelling of 11865648 in words is "eleven million, eight hundred sixty-five thousand, six hundred forty-eight".