744745 has 4 divisors (see below), whose sum is σ = 893700. Its totient is φ = 595792.

The previous prime is 744739. The next prime is 744761. The reversal of 744745 is 547447.

744745 is nontrivially palindromic in base 3.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547447 = 19 ⋅28813.

It can be written as a sum of positive squares in 2 ways, for example, as 502681 + 242064 = 709^2 + 492^2 .

It is a cyclic number.

It is not a de Polignac number, because 744745 - 2¹¹ = 742697 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 74470 + ... + 74479.

It is an arithmetic number, because the mean of its divisors is an integer number (223425).

2⁷⁴⁴⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

744745 is a deficient number, since it is larger than the sum of its proper divisors (148955).

744745 is a wasteful number, since it uses less digits than its factorization.

744745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148954.

The product of its digits is 15680, while the sum is 31.

The square root of 744745 is about 862.9860949054. The cubic root of 744745 is about 90.6433327953.

The spelling of 744745 in words is "seven hundred forty-four thousand, seven hundred forty-five".