1663587424 has 24 divisors (see below), whose sum is σ = 3417588720. Its totient is φ = 795628416.

The previous prime is 1663587391. The next prime is 1663587449. The reversal of 1663587424 is 4247853661.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1129419 + ... + 1130890.

It is an arithmetic number, because the mean of its divisors is an integer number (142399530).

Almost surely, 2^1663587424 is an apocalyptic number.

It is an amenable number.

1663587424 is an abundant number, since it is smaller than the sum of its proper divisors (1754001296).

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

1663587424 is a wasteful number, since it uses less digits than its factorization.

1663587424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260342 (or 2260334 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 1663587424 is about 40787.0987445785. The cubic root of 1663587424 is about 1184.9004821860.

The spelling of 1663587424 in words is "one billion, six hundred sixty-three million, five hundred eighty-seven thousand, four hundred twenty-four".