1663482687 has 8 divisors (see below), whose sum is σ = 2220798336. Its totient is φ = 1107577752.

The previous prime is 1663482673. The next prime is 1663482719. The reversal of 1663482687 is 7862843661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1663482687 - 2¹¹ = 1663480639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663482617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349923 + ... + 354644.

It is an arithmetic number, because the mean of its divisors is an integer number (277599792).

Almost surely, 2^1663482687 is an apocalyptic number.

1663482687 is a deficient number, since it is larger than the sum of its proper divisors (557315649).

1663482687 is an equidigital number, since it uses as much as digits as its factorization.

1663482687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705357.

The product of its digits is 2322432, while the sum is 51.

The square root of 1663482687 is about 40785.8147767088. The cubic root of 1663482687 is about 1184.8756151377.

The spelling of 1663482687 in words is "one billion, six hundred sixty-three million, four hundred eighty-two thousand, six hundred eighty-seven".