745289 has 4 divisors (see below), whose sum is σ = 747024. Its totient is φ = 743556.

The previous prime is 745273. The next prime is 745301. The reversal of 745289 is 982547.

It is a happy number.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 982547 = 19 ⋅51713.

It is a cyclic number.

It is not a de Polignac number, because 745289 - 2⁴ = 745273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745249) 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, 314 + ... + 1260.

It is an arithmetic number, because the mean of its divisors is an integer number (186756).

2⁷⁴⁵²⁸⁹ is an apocalyptic number.

It is an amenable number.

745289 is a deficient number, since it is larger than the sum of its proper divisors (1735).

745289 is an equidigital number, since it uses as much as digits as its factorization.

745289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734.

The product of its digits is 20160, while the sum is 35.

The square root of 745289 is about 863.3012220540. The cubic root of 745289 is about 90.6653976057.

The spelling of 745289 in words is "seven hundred forty-five thousand, two hundred eighty-nine".