745450 has 24 divisors (see below), whose sum is σ = 1469772. Its totient is φ = 280320.

The previous prime is 745397. The next prime is 745471. The reversal of 745450 is 54547.

745450 = 95² + 96² + ... + 145².

It can be written as a sum of positive squares in 6 ways, for example, as 514089 + 231361 = 717^2 + 481^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 412 + ... + 1288.

2⁷⁴⁵⁴⁵⁰ is an apocalyptic number.

745450 is a deficient number, since it is larger than the sum of its proper divisors (724322).

745450 is a wasteful number, since it uses less digits than its factorization.

745450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 901 counting only the distinct ones).

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

The square root of 745450 is about 863.3944637302. The cubic root of 745450 is about 90.6719257570.

Adding to 745450 its reverse (54547), we get a palindrome (799997).

The spelling of 745450 in words is "seven hundred forty-five thousand, four hundred fifty".