745371085 has 4 divisors (see below), whose sum is σ = 894445308. Its totient is φ = 596296864.

The previous prime is 745371061. The next prime is 745371091. The reversal of 745371085 is 580173547.

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

It can be written as a sum of positive squares in 2 ways, for example, as 117267241 + 628103844 = 10829^2 + 25062^2 .

It is a cyclic number.

It is not a de Polignac number, because 745371085 - 2²⁵ = 711816653 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74537104 + ... + 74537113.

It is an arithmetic number, because the mean of its divisors is an integer number (223611327).

Almost surely, 2^745371085 is an apocalyptic number.

It is an amenable number.

745371085 is a deficient number, since it is larger than the sum of its proper divisors (149074223).

745371085 is a wasteful number, since it uses less digits than its factorization.

745371085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149074222.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 745371085 is about 27301.4850328695. The cubic root of 745371085 is about 906.6872606668.

The spelling of 745371085 in words is "seven hundred forty-five million, three hundred seventy-one thousand, eighty-five".