6785979940 has 24 divisors (see below), whose sum is σ = 14253253560. Its totient is φ = 2713878528.

The previous prime is 6785979859. The next prime is 6785980001. The reversal of 6785979940 is 499795876.

It can be written as a sum of positive squares in 4 ways, for example, as 1239603264 + 5546376676 = 35208^2 + 74474^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87076 + ... + 145444.

It is an arithmetic number, because the mean of its divisors is an integer number (593885565).

Almost surely, 2^6785979940 is an apocalyptic number.

It is an amenable number.

6785979940 is an abundant number, since it is smaller than the sum of its proper divisors (7467273620).

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

6785979940 is a wasteful number, since it uses less digits than its factorization.

6785979940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64191 (or 64189 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 64.

The square root of 6785979940 is about 82377.0595493673. The cubic root of 6785979940 is about 1893.2335434605.

The spelling of 6785979940 in words is "six billion, seven hundred eighty-five million, nine hundred seventy-nine thousand, nine hundred forty".