745091 has 8 divisors (see below), whose sum is σ = 774144. Its totient is φ = 716680.

The previous prime is 745067. The next prime is 745103. The reversal of 745091 is 190547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 745091 - 2⁶ = 745027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 745091.

It is not an unprimeable number, because it can be changed into a prime (745001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3806 + ... + 3996.

It is an arithmetic number, because the mean of its divisors is an integer number (96768).

2⁷⁴⁵⁰⁹¹ is an apocalyptic number.

745091 is a deficient number, since it is larger than the sum of its proper divisors (29053).

745091 is a wasteful number, since it uses less digits than its factorization.

745091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 745091 is about 863.1865383566. The cubic root of 745091 is about 90.6573679069.

The spelling of 745091 in words is "seven hundred forty-five thousand, ninety-one".