745643017 has 8 divisors (see below), whose sum is σ = 855919296. Its totient is φ = 636305712.

The previous prime is 745643009. The next prime is 745643021. The reversal of 745643017 is 710346547.

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

It is not a de Polignac number, because 745643017 - 2³ = 745643009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745643027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233038 + ... + 236215.

It is an arithmetic number, because the mean of its divisors is an integer number (106989912).

Almost surely, 2^745643017 is an apocalyptic number.

It is an amenable number.

745643017 is a deficient number, since it is larger than the sum of its proper divisors (110276279).

745643017 is a wasteful number, since it uses less digits than its factorization.

745643017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469487.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 745643017 is about 27306.4647473817. The cubic root of 745643017 is about 906.7975087958.

The spelling of 745643017 in words is "seven hundred forty-five million, six hundred forty-three thousand, seventeen".