744611868 has 144 divisors (see below), whose sum is σ = 2527289856. Its totient is φ = 178519680.

The previous prime is 744611863. The next prime is 744611869. The reversal of 744611868 is 868116447.

744611868 is a `hidden beast` number, since 7 + 4 + 461 + 186 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744611863) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25705 + ... + 46367.

It is an arithmetic number, because the mean of its divisors is an integer number (17550624).

Almost surely, 2^744611868 is an apocalyptic number.

744611868 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 744611868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1263644928).

744611868 is an abundant number, since it is smaller than the sum of its proper divisors (1782677988).

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

744611868 is a wasteful number, since it uses less digits than its factorization.

744611868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20704 (or 20699 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 744611868 is about 27287.5771735052. The cubic root of 744611868 is about 906.3793128324.

The spelling of 744611868 in words is "seven hundred forty-four million, six hundred eleven thousand, eight hundred sixty-eight".