6978984787 has 8 divisors (see below), whose sum is σ = 7021890512. Its totient is φ = 6936127200.

The previous prime is 6978984773. The next prime is 6978984797. The reversal of 6978984787 is 7874898796.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6978984787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6978984707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304048 + ... + 326194.

It is an arithmetic number, because the mean of its divisors is an integer number (877736314).

Almost surely, 2^6978984787 is an apocalyptic number.

6978984787 is a deficient number, since it is larger than the sum of its proper divisors (42905725).

6978984787 is a wasteful number, since it uses less digits than its factorization.

6978984787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24069.

The product of its digits is 341397504, while the sum is 73.

The square root of 6978984787 is about 83540.3183319288. The cubic root of 6978984787 is about 1911.0149469023.

The spelling of 6978984787 in words is "six billion, nine hundred seventy-eight million, nine hundred eighty-four thousand, seven hundred eighty-seven".