747136668 has 24 divisors (see below), whose sum is σ = 1746758160. Its totient is φ = 248554240.

The previous prime is 747136667. The next prime is 747136681. The reversal of 747136668 is 866631747.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747136667) 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 in 7 ways as a sum of consecutive naturals, for example, 55053 + ... + 67268.

It is an arithmetic number, because the mean of its divisors is an integer number (72781590).

Almost surely, 2^747136668 is an apocalyptic number.

It is an amenable number.

747136668 is an abundant number, since it is smaller than the sum of its proper divisors (999621492).

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

747136668 is a wasteful number, since it uses less digits than its factorization.

747136668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122837 (or 122835 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 48.

The square root of 747136668 is about 27333.8008334004. The cubic root of 747136668 is about 907.4025953179.

The spelling of 747136668 in words is "seven hundred forty-seven million, one hundred thirty-six thousand, six hundred sixty-eight".