1663136 has 12 divisors (see below), whose sum is σ = 3274362. Its totient is φ = 831552.

The previous prime is 1663133. The next prime is 1663147. The reversal of 1663136 is 6313661.

It can be written as a sum of positive squares in only one way, i.e., 1547536 + 115600 = 1244^2 + 340^2 .

It is not an unprimeable number, because it can be changed into a prime (1663133) 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 as a sum of consecutive naturals, namely, 25955 + ... + 26018.

2^1663136 is an apocalyptic number.

1663136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1663136 is a deficient number, since it is larger than the sum of its proper divisors (1611226).

1663136 is an equidigital number, since it uses as much as digits as its factorization.

1663136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51983 (or 51975 counting only the distinct ones).

The product of its digits is 1944, while the sum is 26.

The square root of 1663136 is about 1289.6263024613. The cubic root of 1663136 is about 118.4793295974.

Adding to 1663136 its reverse (6313661), we get a palindrome (7976797).

The spelling of 1663136 in words is "one million, six hundred sixty-three thousand, one hundred thirty-six".