745220905 has 16 divisors (see below), whose sum is σ = 1050606144. Its totient is φ = 500287680.

The previous prime is 745220893. The next prime is 745220911. The reversal of 745220905 is 509022547.

745220905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 745220905 - 2¹¹ = 745218857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520419 + ... + 521848.

It is an arithmetic number, because the mean of its divisors is an integer number (65662884).

Almost surely, 2^745220905 is an apocalyptic number.

It is an amenable number.

745220905 is a deficient number, since it is larger than the sum of its proper divisors (305385239).

745220905 is a wasteful number, since it uses less digits than its factorization.

745220905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042296.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 745220905 is about 27298.7344944779. The cubic root of 745220905 is about 906.6263623922.

The spelling of 745220905 in words is "seven hundred forty-five million, two hundred twenty thousand, nine hundred five".