7686764672 has 16 divisors (see below), whose sum is σ = 15313476750. Its totient is φ = 3843382272.

The previous prime is 7686764671. The next prime is 7686764699. The reversal of 7686764672 is 2764676867.

It can be written as a sum of positive squares in only one way, i.e., 5550846016 + 2135918656 = 74504^2 + 46216^2 .

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

It is a super-2 number, since 2×7686764672² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7686764671) 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 as a sum of consecutive naturals, namely, 30026297 + ... + 30026552.

Almost surely, 2^7686764672 is an apocalyptic number.

It is an amenable number.

7686764672 is a deficient number, since it is larger than the sum of its proper divisors (7626712078).

7686764672 is an equidigital number, since it uses as much as digits as its factorization.

7686764672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60052863 (or 60052851 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 59.

The square root of 7686764672 is about 87674.1961582768. The cubic root of 7686764672 is about 1973.5487643222.

The spelling of 7686764672 in words is "seven billion, six hundred eighty-six million, seven hundred sixty-four thousand, six hundred seventy-two".