745021071 has 10 divisors (see below), whose sum is σ = 1112932832. Its totient is φ = 496680660.

The previous prime is 745021061. The next prime is 745021087. The reversal of 745021071 is 170120547.

745021071 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 745021071 - 2⁶ = 745021007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745021021) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4598815 + ... + 4598976.

Almost surely, 2^745021071 is an apocalyptic number.

745021071 is a deficient number, since it is larger than the sum of its proper divisors (367911761).

745021071 is an equidigital number, since it uses as much as digits as its factorization.

745021071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9197803 (or 9197794 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 745021071 is about 27295.0741160379. The cubic root of 745021071 is about 906.5453166388.

The spelling of 745021071 in words is "seven hundred forty-five million, twenty-one thousand, seventy-one".