744985 has 4 divisors (see below), whose sum is σ = 893988. Its totient is φ = 595984.

The previous prime is 744977. The next prime is 745001. The reversal of 744985 is 589447.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 594441 + 150544 = 771^2 + 388^2 .

It is a cyclic number.

It is not a de Polignac number, because 744985 - 2³ = 744977 is a prime.

It is a Duffinian number.

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, 74494 + ... + 74503.

It is an arithmetic number, because the mean of its divisors is an integer number (223497).

2⁷⁴⁴⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

744985 is a deficient number, since it is larger than the sum of its proper divisors (149003).

744985 is a wasteful number, since it uses less digits than its factorization.

744985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149002.

The product of its digits is 40320, while the sum is 37.

The square root of 744985 is about 863.1251357712. The cubic root of 744985 is about 90.6530685946.

The spelling of 744985 in words is "seven hundred forty-four thousand, nine hundred eighty-five".