745504 has 12 divisors (see below), whose sum is σ = 1467774. Its totient is φ = 372736.

The previous prime is 745477. The next prime is 745517. The reversal of 745504 is 405547.

It can be written as a sum of positive squares in only one way, i.e., 725904 + 19600 = 852^2 + 140^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 9.

It is an unprimeable number.

745504 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11617 + ... + 11680.

2⁷⁴⁵⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

745504 is a deficient number, since it is larger than the sum of its proper divisors (722270).

745504 is a wasteful number, since it uses less digits than its factorization.

745504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23307 (or 23299 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 745504 is about 863.4257350809. The cubic root of 745504 is about 90.6741151128.

The spelling of 745504 in words is "seven hundred forty-five thousand, five hundred four".