11644990 has 16 divisors (see below), whose sum is σ = 23955552. Its totient is φ = 3992544.

The previous prime is 11644981. The next prime is 11644991. The reversal of 11644990 is 9944611.

11644990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11644991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83109 + ... + 83248.

It is an arithmetic number, because the mean of its divisors is an integer number (1497222).

Almost surely, 2^11644990 is an apocalyptic number.

11644990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11644990 is an abundant number, since it is smaller than the sum of its proper divisors (12310562).

11644990 is a wasteful number, since it uses less digits than its factorization.

11644990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166371.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 11644990 is about 3412.4756409387. The cubic root of 11644990 is about 226.6625167445.

The spelling of 11644990 in words is "eleven million, six hundred forty-four thousand, nine hundred ninety".