6679977140 has 36 divisors (see below), whose sum is σ = 14086406124. Its totient is φ = 2660875776.

The previous prime is 6679977137. The next prime is 6679977149. The reversal of 6679977140 is 417799766.

It can be written as a sum of positive squares in 6 ways, for example, as 201980944 + 6477996196 = 14212^2 + 80486^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6679977149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6466064 + ... + 6467096.

It is an arithmetic number, because the mean of its divisors is an integer number (391289059).

Almost surely, 2^6679977140 is an apocalyptic number.

It is an amenable number.

6679977140 is an abundant number, since it is smaller than the sum of its proper divisors (7406428984).

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

6679977140 is a wasteful number, since it uses less digits than its factorization.

6679977140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388 (or 1353 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 56.

The square root of 6679977140 is about 81731.1271181305. The cubic root of 6679977140 is about 1883.3237885716.

The spelling of 6679977140 in words is "six billion, six hundred seventy-nine million, nine hundred seventy-seven thousand, one hundred forty".