8987816 has 8 divisors (see below), whose sum is σ = 16852170. Its totient is φ = 4493904.

The previous prime is 8987809. The next prime is 8987851. The reversal of 8987816 is 6187898.

It can be written as a sum of positive squares in only one way, i.e., 6522916 + 2464900 = 2554^2 + 1570^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561731 + ... + 561746.

Almost surely, 2^8987816 is an apocalyptic number.

It is an amenable number.

8987816 is a deficient number, since it is larger than the sum of its proper divisors (7864354).

8987816 is a wasteful number, since it uses less digits than its factorization.

8987816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123483 (or 1123479 counting only the distinct ones).

The product of its digits is 193536, while the sum is 47.

The square root of 8987816 is about 2997.9686455999. The cubic root of 8987816 is about 207.9144742070.

The spelling of 8987816 in words is "eight million, nine hundred eighty-seven thousand, eight hundred sixteen".