7685571968 has 16 divisors (see below), whose sum is σ = 15311100660. Its totient is φ = 3842785920.

The previous prime is 7685571961. The next prime is 7685571979. The reversal of 7685571968 is 8691755867.

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 7685571968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7685571961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30021638 + ... + 30021893.

Almost surely, 2^7685571968 is an apocalyptic number.

It is an amenable number.

7685571968 is a deficient number, since it is larger than the sum of its proper divisors (7625528692).

7685571968 is an equidigital number, since it uses as much as digits as its factorization.

7685571968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60043545 (or 60043533 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 62.

The square root of 7685571968 is about 87667.3939843087. The cubic root of 7685571968 is about 1973.4466849099.

The spelling of 7685571968 in words is "seven billion, six hundred eighty-five million, five hundred seventy-one thousand, nine hundred sixty-eight".