745258 has 4 divisors (see below), whose sum is σ = 1117890. Its totient is φ = 372628.

The previous prime is 745249. The next prime is 745273. The reversal of 745258 is 852547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 852547 = 233 ⋅3659.

It can be written as a sum of positive squares in only one way, i.e., 400689 + 344569 = 633^2 + 587^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 186313 + ... + 186316.

2⁷⁴⁵²⁵⁸ is an apocalyptic number.

745258 is a deficient number, since it is larger than the sum of its proper divisors (372632).

745258 is a wasteful number, since it uses less digits than its factorization.

745258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372631.

The product of its digits is 11200, while the sum is 31.

The square root of 745258 is about 863.2832675316. The cubic root of 745258 is about 90.6641405246.

The spelling of 745258 in words is "seven hundred forty-five thousand, two hundred fifty-eight".