745544 has 16 divisors (see below), whose sum is σ = 1432620. Its totient is φ = 363520.

The previous prime is 745543. The next prime is 745567. The reversal of 745544 is 445547.

It can be written as a sum of positive squares in 2 ways, for example, as 743044 + 2500 = 862^2 + 50^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 745544.

It is not an unprimeable number, because it can be changed into a prime (745543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809 + ... + 1464.

2⁷⁴⁵⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

745544 is a deficient number, since it is larger than the sum of its proper divisors (687076).

745544 is a wasteful number, since it uses less digits than its factorization.

745544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320 (or 2316 counting only the distinct ones).

The product of its digits is 11200, while the sum is 29.

The square root of 745544 is about 863.4488983142. The cubic root of 745544 is about 90.6757367897.

The spelling of 745544 in words is "seven hundred forty-five thousand, five hundred forty-four".