7686720870 has 16 divisors (see below), whose sum is σ = 18448130160. Its totient is φ = 2049792224.

The previous prime is 7686720829. The next prime is 7686720871. The reversal of 7686720870 is 780276867.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7686720871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128111985 + ... + 128112044.

It is an arithmetic number, because the mean of its divisors is an integer number (1153008135).

Almost surely, 2^7686720870 is an apocalyptic number.

7686720870 is an abundant number, since it is smaller than the sum of its proper divisors (10761409290).

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

7686720870 is a wasteful number, since it uses less digits than its factorization.

7686720870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256224039.

The product of its (nonzero) digits is 1580544, while the sum is 51.

The square root of 7686720870 is about 87673.9463580829. The cubic root of 7686720870 is about 1973.5450156472.

The spelling of 7686720870 in words is "seven billion, six hundred eighty-six million, seven hundred twenty thousand, eight hundred seventy".