745573663 has 4 divisors (see below), whose sum is σ = 748544328. Its totient is φ = 742603000.

The previous prime is 745573651. The next prime is 745573669. The reversal of 745573663 is 366375547.

745573663 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 is a cyclic number.

It is not a de Polignac number, because 745573663 - 2¹⁷ = 745442591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745573669) 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, 1484956 + ... + 1485457.

It is an arithmetic number, because the mean of its divisors is an integer number (187136082).

Almost surely, 2^745573663 is an apocalyptic number.

745573663 is a deficient number, since it is larger than the sum of its proper divisors (2970665).

745573663 is a wasteful number, since it uses less digits than its factorization.

745573663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970664.

The product of its digits is 1587600, while the sum is 46.

The square root of 745573663 is about 27305.1947987924. The cubic root of 745573663 is about 906.7693934721.

It can be divided in two parts, 7455 and 73663, that added together give a palindrome (81118).

The spelling of 745573663 in words is "seven hundred forty-five million, five hundred seventy-three thousand, six hundred sixty-three".