744623 has 8 divisors (see below), whose sum is σ = 819840. Its totient is φ = 670680.

The previous prime is 744607. The next prime is 744637. The reversal of 744623 is 326447.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 744623 - 2⁴ = 744607 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 744592 and 744601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744823) 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, 1286 + ... + 1772.

It is an arithmetic number, because the mean of its divisors is an integer number (102480).

2⁷⁴⁴⁶²³ is an apocalyptic number.

744623 is a deficient number, since it is larger than the sum of its proper divisors (75217).

744623 is a wasteful number, since it uses less digits than its factorization.

744623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637.

The product of its digits is 4032, while the sum is 26.

The square root of 744623 is about 862.9154072098. The cubic root of 744623 is about 90.6383829622.

The spelling of 744623 in words is "seven hundred forty-four thousand, six hundred twenty-three".