87521648 has 20 divisors (see below), whose sum is σ = 169866360. Its totient is φ = 43685184.

The previous prime is 87521633. The next prime is 87521683. The reversal of 87521648 is 84612578.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5486 + ... + 14322.

It is an arithmetic number, because the mean of its divisors is an integer number (8493318).

Almost surely, 2^87521648 is an apocalyptic number.

It is an amenable number.

87521648 is a deficient number, since it is larger than the sum of its proper divisors (82344712).

87521648 is a wasteful number, since it uses less digits than its factorization.

87521648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9464 (or 9458 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 87521648 is about 9355.3005296463. The cubic root of 87521648 is about 443.9886099397.

The spelling of 87521648 in words is "eighty-seven million, five hundred twenty-one thousand, six hundred forty-eight".