744581 has 4 divisors (see below), whose sum is σ = 749664. Its totient is φ = 739500.

The previous prime is 744559. The next prime is 744599. The reversal of 744581 is 185447.

744581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 185447 = 53 ⋅3499.

It is a cyclic number.

It is not a de Polignac number, because 744581 - 2¹⁸ = 482437 is a prime.

It is a super-2 number, since 2×744581² = 1108801731122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744511) 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, 2315 + ... + 2616.

It is an arithmetic number, because the mean of its divisors is an integer number (187416).

2⁷⁴⁴⁵⁸¹ is an apocalyptic number.

It is an amenable number.

744581 is a deficient number, since it is larger than the sum of its proper divisors (5083).

744581 is a wasteful number, since it uses less digits than its factorization.

744581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082.

The product of its digits is 4480, while the sum is 29.

The square root of 744581 is about 862.8910707615. The cubic root of 744581 is about 90.6366787961.

The spelling of 744581 in words is "seven hundred forty-four thousand, five hundred eighty-one".