745434 has 12 divisors (see below), whose sum is σ = 1615146. Its totient is φ = 248472.

The previous prime is 745397. The next prime is 745471. The reversal of 745434 is 434547.

It is an interprime number because it is at equal distance from previous prime (745397) and next prime (745471).

It can be written as a sum of positive squares in only one way, i.e., 540225 + 205209 = 735^2 + 453^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 745398 and 745407.

It is an unprimeable number.

745434 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 in 5 ways as a sum of consecutive naturals, for example, 20689 + ... + 20724.

2⁷⁴⁵⁴³⁴ is an apocalyptic number.

745434 is an abundant number, since it is smaller than the sum of its proper divisors (869712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

745434 is a wasteful number, since it uses less digits than its factorization.

745434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41421 (or 41418 counting only the distinct ones).

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

The square root of 745434 is about 863.3851979273. The cubic root of 745434 is about 90.6712770387.

It can be divided in two parts, 74543 and 4, that added together give a palindrome (74547).

The spelling of 745434 in words is "seven hundred forty-five thousand, four hundred thirty-four".