745811 has 4 divisors (see below), whose sum is σ = 813624. Its totient is φ = 678000.

The previous prime is 745757. The next prime is 745817. The reversal of 745811 is 118547.

745811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 745811 - 2⁶ = 745747 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 745811.

It is not an unprimeable number, because it can be changed into a prime (745817) 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, 33890 + ... + 33911.

It is an arithmetic number, because the mean of its divisors is an integer number (203406).

2⁷⁴⁵⁸¹¹ is an apocalyptic number.

745811 is a deficient number, since it is larger than the sum of its proper divisors (67813).

745811 is a wasteful number, since it uses less digits than its factorization.

745811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67812.

The product of its digits is 1120, while the sum is 26.

The square root of 745811 is about 863.6034969823. The cubic root of 745811 is about 90.6865599971.

Subtracting from 745811 its reverse (118547), we obtain a square (627264 = 792²).

It can be divided in two parts, 74 and 5811, that added together give a palindrome (5885).

The spelling of 745811 in words is "seven hundred forty-five thousand, eight hundred eleven".