987656330 has 16 divisors (see below), whose sum is σ = 1778694120. Its totient is φ = 394859712.

The previous prime is 987656323. The next prime is 987656333. The reversal of 987656330 is 33656789.

It is a Cunningham number, because it is equal to 31427²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 979877809 + 7778521 = 31303^2 + 2789^2 .

It is not an unprimeable number, because it can be changed into a prime (987656333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4049 + ... + 44628.

Almost surely, 2^987656330 is an apocalyptic number.

987656330 is a deficient number, since it is larger than the sum of its proper divisors (791037790).

987656330 is a wasteful number, since it uses less digits than its factorization.

987656330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50713.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 987656330 is about 31427.0000159099. Note that the first 4 decimals coincide. The cubic root of 987656330 is about 995.8683966965.

The spelling of 987656330 in words is "nine hundred eighty-seven million, six hundred fifty-six thousand, three hundred thirty".