744341721 has 4 divisors (see below), whose sum is σ = 992455632. Its totient is φ = 496227812.

The previous prime is 744341671. The next prime is 744341747. The reversal of 744341721 is 127143447.

744341721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-744341721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (744349721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124056951 + ... + 124056956.

It is an arithmetic number, because the mean of its divisors is an integer number (248113908).

Almost surely, 2^744341721 is an apocalyptic number.

It is an amenable number.

744341721 is a deficient number, since it is larger than the sum of its proper divisors (248113911).

744341721 is a wasteful number, since it uses less digits than its factorization.

744341721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248113910.

The product of its digits is 18816, while the sum is 33.

The square root of 744341721 is about 27282.6267247126. The cubic root of 744341721 is about 906.2696873662.

The spelling of 744341721 in words is "seven hundred forty-four million, three hundred forty-one thousand, seven hundred twenty-one".