11649906 has 24 divisors (see below), whose sum is σ = 26177424. Its totient is φ = 3883140.

The previous prime is 11649901. The next prime is 11649923. The reversal of 11649906 is 60994611.

11649906 is a `hidden beast` number, since 1 + 1 + 649 + 9 + 0 + 6 = 666.

11649906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11649901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11500 + ... + 12471.

It is an arithmetic number, because the mean of its divisors is an integer number (1090726).

Almost surely, 2^11649906 is an apocalyptic number.

11649906 is an abundant number, since it is smaller than the sum of its proper divisors (14527518).

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

11649906 is an equidigital number, since it uses as much as digits as its factorization.

11649906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23988 (or 23976 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 11649906 is about 3413.1958631171. The cubic root of 11649906 is about 226.6944078888.

The spelling of 11649906 in words is "eleven million, six hundred forty-nine thousand, nine hundred six".