6985824387 has 4 divisors (see below), whose sum is σ = 9314432520. Its totient is φ = 4657216256.

The previous prime is 6985824383. The next prime is 6985824409. The reversal of 6985824387 is 7834285896.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6985824387 - 2² = 6985824383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6985824387.

It is not an unprimeable number, because it can be changed into a prime (6985824383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1164304062 + ... + 1164304067.

It is an arithmetic number, because the mean of its divisors is an integer number (2328608130).

Almost surely, 2^6985824387 is an apocalyptic number.

6985824387 is a deficient number, since it is larger than the sum of its proper divisors (2328608133).

6985824387 is a wasteful number, since it uses less digits than its factorization.

6985824387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328608132.

The product of its digits is 23224320, while the sum is 60.

The square root of 6985824387 is about 83581.2442297912. The cubic root of 6985824387 is about 1911.6390257480.

The spelling of 6985824387 in words is "six billion, nine hundred eighty-five million, eight hundred twenty-four thousand, three hundred eighty-seven".