11644740 has 36 divisors (see below), whose sum is σ = 35322924. Its totient is φ = 3105216.

The previous prime is 11644733. The next prime is 11644769. The reversal of 11644740 is 4744611.

11644740 is a `hidden beast` number, since 11 + 644 + 7 + 4 + 0 = 666.

11644740 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4769856 + 6874884 = 2184^2 + 2622^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32167 + ... + 32526.

Almost surely, 2^11644740 is an apocalyptic number.

11644740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11644740 is an abundant number, since it is smaller than the sum of its proper divisors (23678184).

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

11644740 is a wasteful number, since it uses less digits than its factorization.

11644740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64708 (or 64703 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 11644740 is about 3412.4390104440. The cubic root of 11644740 is about 226.6608947012.

The spelling of 11644740 in words is "eleven million, six hundred forty-four thousand, seven hundred forty".