987656329 has 9 divisors (see below), whose sum is σ = 1085985831. Its totient is φ = 897555120.

The previous prime is 987656323. The next prime is 987656333. The reversal of 987656329 is 923656789.

The square root of 987656329 is 31427.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 665382025 + 322274304 = 25795^2 + 17952^2 .

It is not a de Polignac number, because 987656329 - 2¹¹ = 987654281 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 987656329.

It is not an unprimeable number, because it can be changed into a prime (987656323) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 344269 + ... + 347125.

Almost surely, 2^987656329 is an apocalyptic number.

987656329 is the 31427-th square number.

987656329 is the 15714-th centered octagonal number.

It is an amenable number.

987656329 is a deficient number, since it is larger than the sum of its proper divisors (98329502).

987656329 is an frugal number, since it uses more digits than its factorization.

987656329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5736 (or 2868 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 55.

The cubic root of 987656329 is about 995.8683963604.

The spelling of 987656329 in words is "nine hundred eighty-seven million, six hundred fifty-six thousand, three hundred twenty-nine".