744066683648 has 72 divisors (see below), whose sum is σ = 1555094969568. Its totient is φ = 354642624512.

The previous prime is 744066683629. The next prime is 744066683693. The reversal of 744066683648 is 846386660447.

It is a Cunningham number, because it is equal to 862593²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1509536 + ... + 1940832.

It is an arithmetic number, because the mean of its divisors is an integer number (21598541244).

Almost surely, 2^744066683648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 744066683648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (777547484784).

744066683648 is an abundant number, since it is smaller than the sum of its proper divisors (811028285920).

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

744066683648 is a wasteful number, since it uses less digits than its factorization.

744066683648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431629 (or 431615 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 62.

The spelling of 744066683648 in words is "seven hundred forty-four billion, sixty-six million, six hundred eighty-three thousand, six hundred forty-eight".