1663056 has 30 divisors (see below), whose sum is σ = 4654650. Its totient is φ = 554304.

The previous prime is 1663031. The next prime is 1663073. The reversal of 1663056 is 6503661.

It can be written as a sum of positive squares in only one way, i.e., 1648656 + 14400 = 1284^2 + 120^2 .

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 5 ways as a sum of consecutive naturals, for example, 5631 + ... + 5918.

It is an arithmetic number, because the mean of its divisors is an integer number (155155).

2^1663056 is an apocalyptic number.

1663056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1663056 is an abundant number, since it is smaller than the sum of its proper divisors (2991594).

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

1663056 is a wasteful number, since it uses less digits than its factorization.

1663056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11563 (or 11554 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 1663056 is about 1289.5952853512. The cubic root of 1663056 is about 118.4774298733.

The spelling of 1663056 in words is "one million, six hundred sixty-three thousand, fifty-six".