1441664 has 32 divisors (see below), whose sum is σ = 3284400. Its totient is φ = 617472.

The previous prime is 1441637. The next prime is 1441669. The reversal of 1441664 is 4661441.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1441669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92 + ... + 1700.

2^1441664 is an apocalyptic number.

1441664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1441664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1642200).

1441664 is an abundant number, since it is smaller than the sum of its proper divisors (1842736).

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

1441664 is an equidigital number, since it uses as much as digits as its factorization.

1441664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630 (or 1618 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 1441664 is about 1200.6931331527. The cubic root of 1441664 is about 112.9678034986.

The spelling of 1441664 in words is "one million, four hundred forty-one thousand, six hundred sixty-four".