745173305 has 4 divisors (see below), whose sum is σ = 894207972. Its totient is φ = 596138640.

The previous prime is 745173281. The next prime is 745173313. The reversal of 745173305 is 503371547.

745173305 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 can be written as a sum of positive squares in 2 ways, for example, as 395333689 + 349839616 = 19883^2 + 18704^2 .

It is not a de Polignac number, because 745173305 - 2⁸ = 745173049 is a prime.

It is a Duffinian 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, 74517326 + ... + 74517335.

It is an arithmetic number, because the mean of its divisors is an integer number (223551993).

Almost surely, 2^745173305 is an apocalyptic number.

It is an amenable number.

745173305 is a deficient number, since it is larger than the sum of its proper divisors (149034667).

745173305 is a wasteful number, since it uses less digits than its factorization.

745173305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149034666.

The product of its (nonzero) digits is 44100, while the sum is 35.

The square root of 745173305 is about 27297.8626452695. The cubic root of 745173305 is about 906.6070587945.

The spelling of 745173305 in words is "seven hundred forty-five million, one hundred seventy-three thousand, three hundred five".