745443 has 10 divisors (see below), whose sum is σ = 1113684. Its totient is φ = 496908.

The previous prime is 745397. The next prime is 745471. The reversal of 745443 is 344547.

It is not a de Polignac number, because 745443 - 2⁶ = 745379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (745243) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4521 + ... + 4682.

2⁷⁴⁵⁴⁴³ is an apocalyptic number.

745443 is a deficient number, since it is larger than the sum of its proper divisors (368241).

745443 is an equidigital number, since it uses as much as digits as its factorization.

745443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9215 (or 9206 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 745443 is about 863.3904099537. The cubic root of 745443 is about 90.6716419439.

It can be divided in two parts, 74544 and 3, that added together give a palindrome (74547).

The spelling of 745443 in words is "seven hundred forty-five thousand, four hundred forty-three".