745530073 has 4 divisors (see below), whose sum is σ = 777944448. Its totient is φ = 713115700.

The previous prime is 745530059. The next prime is 745530083. The reversal of 745530073 is 370035547.

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 a cyclic number.

It is not a de Polignac number, because 745530073 - 2⁵ = 745530041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745530013) 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, 16207153 + ... + 16207198.

It is an arithmetic number, because the mean of its divisors is an integer number (194486112).

Almost surely, 2^745530073 is an apocalyptic number.

It is an amenable number.

745530073 is a deficient number, since it is larger than the sum of its proper divisors (32414375).

745530073 is a wasteful number, since it uses less digits than its factorization.

745530073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32414374.

The product of its (nonzero) digits is 44100, while the sum is 34.

The square root of 745530073 is about 27304.3965873630. The cubic root of 745530073 is about 906.7517216890.

The spelling of 745530073 in words is "seven hundred forty-five million, five hundred thirty thousand, seventy-three".