987827556 has 24 divisors (see below), whose sum is σ = 2426243680. Its totient is φ = 311945472.

The previous prime is 987827549. The next prime is 987827567. The reversal of 987827556 is 655728789.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 987827496 and 987827505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2166061 + ... + 2166516.

Almost surely, 2^987827556 is an apocalyptic number.

It is an amenable number.

987827556 is an abundant number, since it is smaller than the sum of its proper divisors (1438416124).

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

987827556 is a wasteful number, since it uses less digits than its factorization.

987827556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332603 (or 4332601 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 57.

The square root of 987827556 is about 31429.7240840578. The cubic root of 987827556 is about 995.9259432687.

The spelling of 987827556 in words is "nine hundred eighty-seven million, eight hundred twenty-seven thousand, five hundred fifty-six".