11649649 has 4 divisors (see below), whose sum is σ = 12708720. Its totient is φ = 10590580.

The previous prime is 11649629. The next prime is 11649667. The reversal of 11649649 is 94694611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-11649649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11649629) 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 in 3 ways as a sum of consecutive naturals, for example, 529519 + ... + 529540.

It is an arithmetic number, because the mean of its divisors is an integer number (3177180).

Almost surely, 2^11649649 is an apocalyptic number.

It is an amenable number.

11649649 is a deficient number, since it is larger than the sum of its proper divisors (1059071).

11649649 is a wasteful number, since it uses less digits than its factorization.

11649649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059070.

The product of its digits is 46656, while the sum is 40.

The square root of 11649649 is about 3413.1582149089. The cubic root of 11649649 is about 226.6927408971.

The spelling of 11649649 in words is "eleven million, six hundred forty-nine thousand, six hundred forty-nine".