987481564 has 12 divisors (see below), whose sum is σ = 1783837888. Its totient is φ = 477813600.

The previous prime is 987481549. The next prime is 987481571. The reversal of 987481564 is 465184789.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3981657 + ... + 3981904.

Almost surely, 2^987481564 is an apocalyptic number.

It is an amenable number.

987481564 is a deficient number, since it is larger than the sum of its proper divisors (796356324).

987481564 is a wasteful number, since it uses less digits than its factorization.

987481564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7963596 (or 7963594 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 52.

The square root of 987481564 is about 31424.2193856904. The cubic root of 987481564 is about 995.8096535225.

The spelling of 987481564 in words is "nine hundred eighty-seven million, four hundred eighty-one thousand, five hundred sixty-four".