747742868 has 12 divisors (see below), whose sum is σ = 1333240020. Its totient is φ = 366817152.

The previous prime is 747742843. The next prime is 747742907. The reversal of 747742868 is 868247747.

It can be written as a sum of positive squares in 2 ways, for example, as 417303184 + 330439684 = 20428^2 + 18178^2 .

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1763333 + ... + 1763756.

It is an arithmetic number, because the mean of its divisors is an integer number (111103335).

Almost surely, 2^747742868 is an apocalyptic number.

It is an amenable number.

747742868 is a deficient number, since it is larger than the sum of its proper divisors (585497152).

747742868 is a wasteful number, since it uses less digits than its factorization.

747742868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3527146 (or 3527144 counting only the distinct ones).

The product of its digits is 4214784, while the sum is 53.

The square root of 747742868 is about 27344.8874197719. The cubic root of 747742868 is about 907.6479403243.

The spelling of 747742868 in words is "seven hundred forty-seven million, seven hundred forty-two thousand, eight hundred sixty-eight".