7686720867 has 32 divisors (see below), whose sum is σ = 12410302464. Its totient is φ = 4131302400.

The previous prime is 7686720829. The next prime is 7686720871. The reversal of 7686720867 is 7680276867.

It is not a de Polignac number, because 7686720867 - 2²⁴ = 7669943651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7686720887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 608142 + ... + 620652.

It is an arithmetic number, because the mean of its divisors is an integer number (387821952).

Almost surely, 2^7686720867 is an apocalyptic number.

7686720867 is a deficient number, since it is larger than the sum of its proper divisors (4723581597).

7686720867 is a wasteful number, since it uses less digits than its factorization.

7686720867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14259.

The product of its (nonzero) digits is 9483264, while the sum is 57.

The square root of 7686720867 is about 87673.9463409741. The cubic root of 7686720867 is about 1973.5450153905.

The spelling of 7686720867 in words is "seven billion, six hundred eighty-six million, seven hundred twenty thousand, eight hundred sixty-seven".