745170073 has 2 divisors, whose sum is σ = 745170074. Its totient is φ = 745170072.

The previous prime is 745170071. The next prime is 745170103. The reversal of 745170073 is 370071547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 671690889 + 73479184 = 25917^2 + 8572^2 .

It is a cyclic number.

It is not a de Polignac number, because 745170073 - 2¹ = 745170071 is a prime.

Together with 745170071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (745170071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372585036 + 372585037.

It is an arithmetic number, because the mean of its divisors is an integer number (372585037).

Almost surely, 2^745170073 is an apocalyptic number.

It is an amenable number.

745170073 is a deficient number, since it is larger than the sum of its proper divisors (1).

745170073 is an equidigital number, since it uses as much as digits as its factorization.

745170073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 745170073 is about 27297.8034464314. The cubic root of 745170073 is about 906.6057480666.

The spelling of 745170073 in words is "seven hundred forty-five million, one hundred seventy thousand, seventy-three".