1663552 has 56 divisors (see below), whose sum is σ = 3840480. Its totient is φ = 706560.

The previous prime is 1663549. The next prime is 1663579. The reversal of 1663552 is 2553661.

1663552 is nontrivially palindromic in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 1663552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11899 + ... + 12037.

It is an arithmetic number, because the mean of its divisors is an integer number (68580).

2^1663552 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 1663552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1920240).

1663552 is an abundant number, since it is smaller than the sum of its proper divisors (2176928).

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

1663552 is a wasteful number, since it uses less digits than its factorization.

1663552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 169 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 1663552 is about 1289.7875794099. The cubic root of 1663552 is about 118.4892071805.

The spelling of 1663552 in words is "one million, six hundred sixty-three thousand, five hundred fifty-two".