747129668 has 24 divisors (see below), whose sum is σ = 1432128600. Its totient is φ = 339465728.

The previous prime is 747129661. The next prime is 747129683. The reversal of 747129668 is 866921747.

It can be written as a sum of positive squares in 4 ways, for example, as 119727364 + 627402304 = 10942^2 + 25048^2 .

It is not an unprimeable number, because it can be changed into a prime (747129661) 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 in 7 ways as a sum of consecutive naturals, for example, 187463 + ... + 191406.

It is an arithmetic number, because the mean of its divisors is an integer number (59672025).

Almost surely, 2^747129668 is an apocalyptic number.

It is an amenable number.

747129668 is a deficient number, since it is larger than the sum of its proper divisors (684998932).

747129668 is a wasteful number, since it uses less digits than its factorization.

747129668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378919 (or 378917 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The square root of 747129668 is about 27333.6727865100. The cubic root of 747129668 is about 907.3997614597.

The spelling of 747129668 in words is "seven hundred forty-seven million, one hundred twenty-nine thousand, six hundred sixty-eight".