744605 has 4 divisors (see below), whose sum is σ = 893532. Its totient is φ = 595680.

The previous prime is 744599. The next prime is 744607. The reversal of 744605 is 506447.

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 337561 + 407044 = 581^2 + 638^2 .

It is a de Polignac number, because none of the positive numbers 2^k-744605 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744607) 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, 74456 + ... + 74465.

It is an arithmetic number, because the mean of its divisors is an integer number (223383).

2⁷⁴⁴⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

744605 is a deficient number, since it is larger than the sum of its proper divisors (148927).

744605 is a wasteful number, since it uses less digits than its factorization.

744605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148926.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 744605 is about 862.9049773874. The cubic root of 744605 is about 90.6376526131.

The spelling of 744605 in words is "seven hundred forty-four thousand, six hundred five".