766668716684 has 24 divisors (see below), whose sum is σ = 1451354943360. Its totient is φ = 352260336384.

The previous prime is 766668716633. The next prime is 766668716687. The reversal of 766668716684 is 486617866667.

It is a super-2 number, since 2×766668716684² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (766668716687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33045869 + ... + 33069060.

It is an arithmetic number, because the mean of its divisors is an integer number (60473122640).

Almost surely, 2^766668716684 is an apocalyptic number.

It is an amenable number.

766668716684 is a deficient number, since it is larger than the sum of its proper divisors (684686226676).

766668716684 is a wasteful number, since it uses less digits than its factorization.

766668716684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66115169 (or 66115167 counting only the distinct ones).

The product of its digits is 585252864, while the sum is 71.

The spelling of 766668716684 in words is "seven hundred sixty-six billion, six hundred sixty-eight million, seven hundred sixteen thousand, six hundred eighty-four".