745189617 has 4 divisors (see below), whose sum is σ = 993586160. Its totient is φ = 496793076.

The previous prime is 745189607. The next prime is 745189619. The reversal of 745189617 is 716981547.

745189617 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 745189617 - 2¹⁵ = 745156849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745189619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124198267 + ... + 124198272.

It is an arithmetic number, because the mean of its divisors is an integer number (248396540).

Almost surely, 2^745189617 is an apocalyptic number.

It is an amenable number.

745189617 is a deficient number, since it is larger than the sum of its proper divisors (248396543).

745189617 is a wasteful number, since it uses less digits than its factorization.

745189617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248396542.

The product of its digits is 423360, while the sum is 48.

The square root of 745189617 is about 27298.1614216049. The cubic root of 745189617 is about 906.6136740191.

The spelling of 745189617 in words is "seven hundred forty-five million, one hundred eighty-nine thousand, six hundred seventeen".