6978512764 has 6 divisors (see below), whose sum is σ = 12212397344. Its totient is φ = 3489256380.

The previous prime is 6978512711. The next prime is 6978512803. The reversal of 6978512764 is 4672158796.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 872314092 + ... + 872314099.

Almost surely, 2^6978512764 is an apocalyptic number.

It is an amenable number.

6978512764 is a deficient number, since it is larger than the sum of its proper divisors (5233884580).

6978512764 is a wasteful number, since it uses less digits than its factorization.

6978512764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744628195 (or 1744628193 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 55.

The square root of 6978512764 is about 83537.4931632498. The cubic root of 6978512764 is about 1910.9718621570.

The spelling of 6978512764 in words is "six billion, nine hundred seventy-eight million, five hundred twelve thousand, seven hundred sixty-four".