6978343736 has 128 divisors (see below), whose sum is σ = 17229905280. Its totient is φ = 2571042816.

The previous prime is 6978343717. The next prime is 6978343751. The reversal of 6978343736 is 6373438796.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1197566 + ... + 1203378.

It is an arithmetic number, because the mean of its divisors is an integer number (134608635).

Almost surely, 2^6978343736 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 6978343736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8614952640).

6978343736 is an abundant number, since it is smaller than the sum of its proper divisors (10251561544).

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

6978343736 is a wasteful number, since it uses less digits than its factorization.

6978343736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5953 (or 5949 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 56.

The square root of 6978343736 is about 83536.4814676797. The cubic root of 6978343736 is about 1910.9564333510.

The spelling of 6978343736 in words is "six billion, nine hundred seventy-eight million, three hundred forty-three thousand, seven hundred thirty-six".