7680639047 has 4 divisors (see below), whose sum is σ = 7681240080. Its totient is φ = 7680038016.

The previous prime is 7680638899. The next prime is 7680639053. The reversal of 7680639047 is 7409360867.

7680639047 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7680639047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7680638986 and 7680639004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7680639247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280922 + ... + 307047.

It is an arithmetic number, because the mean of its divisors is an integer number (1920310020).

Almost surely, 2^7680639047 is an apocalyptic number.

7680639047 is a deficient number, since it is larger than the sum of its proper divisors (601033).

7680639047 is a wasteful number, since it uses less digits than its factorization.

7680639047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601032.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The square root of 7680639047 is about 87639.2551714128. The cubic root of 7680639047 is about 1973.0243810517.

The spelling of 7680639047 in words is "seven billion, six hundred eighty million, six hundred thirty-nine thousand, forty-seven".