7643612680 has 32 divisors (see below), whose sum is σ = 18761595840. Its totient is φ = 2779495360.

The previous prime is 7643612653. The next prime is 7643612687. The reversal of 7643612680 is 862163467.

It is not an unprimeable number, because it can be changed into a prime (7643612687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8685484 + ... + 8686363.

It is an arithmetic number, because the mean of its divisors is an integer number (586299870).

Almost surely, 2^7643612680 is an apocalyptic number.

It is an amenable number.

7643612680 is an abundant number, since it is smaller than the sum of its proper divisors (11117983160).

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

7643612680 is a wasteful number, since it uses less digits than its factorization.

7643612680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17371869 (or 17371865 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 7643612680 is about 87427.7569196419. The cubic root of 7643612680 is about 1969.8487932250.

The spelling of 7643612680 in words is "seven billion, six hundred forty-three million, six hundred twelve thousand, six hundred eighty".