6942879684 has 120 divisors (see below), whose sum is σ = 19585384280. Its totient is φ = 2131992576.

The previous prime is 6942879667. The next prime is 6942879701. The reversal of 6942879684 is 4869782496.

6942879684 is a `hidden beast` number, since 69 + 428 + 79 + 6 + 84 = 666.

It is an interprime number because it is at equal distance from previous prime (6942879667) and next prime (6942879701).

It can be written as a sum of positive squares in 4 ways, for example, as 1389649284 + 5553230400 = 37278^2 + 74520^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2580612 + ... + 2583300.

Almost surely, 2^6942879684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6942879684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9792692140).

6942879684 is an abundant number, since it is smaller than the sum of its proper divisors (12642504596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6942879684 is a wasteful number, since it uses less digits than its factorization.

6942879684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331 (or 3320 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

The square root of 6942879684 is about 83323.9442417364. The cubic root of 6942879684 is about 1907.7137638727.

The spelling of 6942879684 in words is "six billion, nine hundred forty-two million, eight hundred seventy-nine thousand, six hundred eighty-four".