1663016 has 8 divisors (see below), whose sum is σ = 3118170. Its totient is φ = 831504.

The previous prime is 1663009. The next prime is 1663027. The reversal of 1663016 is 6103661.

It can be written as a sum of positive squares in only one way, i.e., 1464100 + 198916 = 1210^2 + 446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1662982 and 1663000.

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 as a sum of consecutive naturals, namely, 103931 + ... + 103946.

2^1663016 is an apocalyptic number.

It is an amenable number.

1663016 is a deficient number, since it is larger than the sum of its proper divisors (1455154).

1663016 is a wasteful number, since it uses less digits than its factorization.

1663016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207883 (or 207879 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1663016 is about 1289.5797765164. The cubic root of 1663016 is about 118.4764799885.

Adding to 1663016 its reverse (6103661), we get a palindrome (7766677).

The spelling of 1663016 in words is "one million, six hundred sixty-three thousand, sixteen".