987876565 has 16 divisors (see below), whose sum is σ = 1332148608. Its totient is φ = 697790016.

The previous prime is 987876553. The next prime is 987876577. The reversal of 987876565 is 565678789.

987876565 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (987876553) and next prime (987876577).

It is a cyclic number.

It is not a de Polignac number, because 987876565 - 2¹³ = 987868373 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328899 + ... + 331888.

It is an arithmetic number, because the mean of its divisors is an integer number (83259288).

Almost surely, 2^987876565 is an apocalyptic number.

It is an amenable number.

987876565 is a deficient number, since it is larger than the sum of its proper divisors (344272043).

987876565 is a wasteful number, since it uses less digits than its factorization.

987876565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660828.

The product of its digits is 25401600, while the sum is 61.

The square root of 987876565 is about 31430.5037344297. The cubic root of 987876565 is about 995.9424132579.

The spelling of 987876565 in words is "nine hundred eighty-seven million, eight hundred seventy-six thousand, five hundred sixty-five".