1663168 has 28 divisors (see below), whose sum is σ = 3556000. Its totient is φ = 767232.

The previous prime is 1663157. The next prime is 1663169. The reversal of 1663168 is 8613661.

It is a super-2 number, since 2×1663168² = 5532255592448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663169) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 168 + ... + 1831.

It is an arithmetic number, because the mean of its divisors is an integer number (127000).

2^1663168 is an apocalyptic number.

It is an amenable number.

1663168 is an abundant number, since it is smaller than the sum of its proper divisors (1892832).

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

1663168 is a wasteful number, since it uses less digits than its factorization.

1663168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024 (or 2014 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 1663168 is about 1289.6387090965. The cubic root of 1663168 is about 118.4800894699.

The spelling of 1663168 in words is "one million, six hundred sixty-three thousand, one hundred sixty-eight".