745306 has 4 divisors (see below), whose sum is σ = 1117962. Its totient is φ = 372652.

The previous prime is 745301. The next prime is 745307. The reversal of 745306 is 603547.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 707281 + 38025 = 841^2 + 195^2 .

It is not an unprimeable number, because it can be changed into a prime (745301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186325 + ... + 186328.

2⁷⁴⁵³⁰⁶ is an apocalyptic number.

745306 is a deficient number, since it is larger than the sum of its proper divisors (372656).

745306 is a wasteful number, since it uses less digits than its factorization.

745306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372655.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 745306 is about 863.3110679240. The cubic root of 745306 is about 90.6660869580. Note that the first 3 decimals are identical.

The spelling of 745306 in words is "seven hundred forty-five thousand, three hundred six".