766668733684 has 24 divisors (see below), whose sum is σ = 1533406932288. Its totient is φ = 328557429120.

The previous prime is 766668733681. The next prime is 766668733729. The reversal of 766668733684 is 486337866667.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766668733681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20487 + ... + 1238449.

It is an arithmetic number, because the mean of its divisors is an integer number (63891955512).

Almost surely, 2^766668733684 is an apocalyptic number.

It is an amenable number.

766668733684 is an abundant number, since it is smaller than the sum of its proper divisors (766738198604).

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

766668733684 is a wasteful number, since it uses less digits than its factorization.

766668733684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240455 (or 1240453 counting only the distinct ones).

The product of its digits is 877879296, while the sum is 70.

The spelling of 766668733684 in words is "seven hundred sixty-six billion, six hundred sixty-eight million, seven hundred thirty-three thousand, six hundred eighty-four".