1489664 has 54 divisors (see below), whose sum is σ = 3390996. Its totient is φ = 647680.

The previous prime is 1489661. The next prime is 1489667. The reversal of 1489664 is 4669841.

It is an interprime number because it is at equal distance from previous prime (1489661) and next prime (1489667).

Its product of digits (41472) is a multiple of the sum of its prime divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1489661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64757 + ... + 64779.

2^1489664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1489664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1695498).

1489664 is an abundant number, since it is smaller than the sum of its proper divisors (1901332).

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

1489664 is an equidigital number, since it uses as much as digits as its factorization.

1489664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 36 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 1489664 is about 1220.5179228508. The cubic root of 1489664 is about 114.2078898736.

The spelling of 1489664 in words is "one million, four hundred eighty-nine thousand, six hundred sixty-four".