11648649 has 16 divisors (see below), whose sum is σ = 16285824. Its totient is φ = 7392000.

The previous prime is 11648641. The next prime is 11648713. The reversal of 11648649 is 94684611.

It is not a de Polignac number, because 11648649 - 2³ = 11648641 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11648641) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 27459 + ... + 27879.

It is an arithmetic number, because the mean of its divisors is an integer number (1017864).

Almost surely, 2^11648649 is an apocalyptic number.

It is an amenable number.

11648649 is a deficient number, since it is larger than the sum of its proper divisors (4637175).

11648649 is a wasteful number, since it uses less digits than its factorization.

11648649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848.

The product of its digits is 41472, while the sum is 39.

The square root of 11648649 is about 3413.0117198744. The cubic root of 11648649 is about 226.6862543146.

The spelling of 11648649 in words is "eleven million, six hundred forty-eight thousand, six hundred forty-nine".