6987536321 has 16 divisors (see below), whose sum is σ = 7615382400. Its totient is φ = 6392821248.

The previous prime is 6987536287. The next prime is 6987536327. The reversal of 6987536321 is 1236357896.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6987536321 is a prime.

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 6987536321.

It is not an unprimeable number, because it can be changed into a prime (6987536327) by changing a digit.

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, 19376 + ... + 119793.

It is an arithmetic number, because the mean of its divisors is an integer number (475961400).

Almost surely, 2^6987536321 is an apocalyptic number.

It is an amenable number.

6987536321 is a deficient number, since it is larger than the sum of its proper divisors (627846079).

6987536321 is a wasteful number, since it uses less digits than its factorization.

6987536321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139288.

The product of its digits is 1632960, while the sum is 50.

The square root of 6987536321 is about 83591.4847397748. The cubic root of 6987536321 is about 1911.7951673081.

The spelling of 6987536321 in words is "six billion, nine hundred eighty-seven million, five hundred thirty-six thousand, three hundred twenty-one".