745791 has 4 divisors (see below), whose sum is σ = 994392. Its totient is φ = 497192.

The previous prime is 745757. The next prime is 745817. The reversal of 745791 is 197547.

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 745791 - 2⁶ = 745727 is a prime.

It is an Ulam number.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745711) 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, 124296 + ... + 124301.

It is an arithmetic number, because the mean of its divisors is an integer number (248598).

2⁷⁴⁵⁷⁹¹ is an apocalyptic number.

745791 is a deficient number, since it is larger than the sum of its proper divisors (248601).

745791 is a wasteful number, since it uses less digits than its factorization.

745791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248600.

The product of its digits is 8820, while the sum is 33.

The square root of 745791 is about 863.5919175166. The cubic root of 745791 is about 90.6857493595.

The spelling of 745791 in words is "seven hundred forty-five thousand, seven hundred ninety-one".