745611 has 4 divisors (see below), whose sum is σ = 994152. Its totient is φ = 497072.

The previous prime is 745609. The next prime is 745621. The reversal of 745611 is 116547.

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

It is a cyclic number.

It is not a de Polignac number, because 745611 - 2¹ = 745609 is a prime.

It is a D-number.

745611 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (745601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124266 + ... + 124271.

It is an arithmetic number, because the mean of its divisors is an integer number (248538).

2⁷⁴⁵⁶¹¹ is an apocalyptic number.

745611 is a deficient number, since it is larger than the sum of its proper divisors (248541).

745611 is a wasteful number, since it uses less digits than its factorization.

745611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248540.

The product of its digits is 840, while the sum is 24.

The square root of 745611 is about 863.4876953379. The cubic root of 745611 is about 90.6784529684.

The spelling of 745611 in words is "seven hundred forty-five thousand, six hundred eleven".