744505 has 8 divisors (see below), whose sum is σ = 908424. Its totient is φ = 585600.

The previous prime is 744503. The next prime is 744511. The reversal of 744505 is 505447.

It can be written as a sum of positive squares in 4 ways, for example, as 33856 + 710649 = 184^2 + 843^2 .

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

It is not a de Polignac number, because 744505 - 2¹ = 744503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 744505.

It is not an unprimeable number, because it can be changed into a prime (744503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916 + ... + 1525.

It is an arithmetic number, because the mean of its divisors is an integer number (113553).

2⁷⁴⁴⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

744505 is a deficient number, since it is larger than the sum of its proper divisors (163919).

744505 is a wasteful number, since it uses less digits than its factorization.

744505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 744505 is about 862.8470316342. The cubic root of 744505 is about 90.6335949042.

The spelling of 744505 in words is "seven hundred forty-four thousand, five hundred five".