745497713 has 4 divisors (see below), whose sum is σ = 748697508. Its totient is φ = 742297920.

The previous prime is 745497707. The next prime is 745497749. The reversal of 745497713 is 317794547.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72199009 + 673298704 = 8497^2 + 25948^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745497713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (745491713) 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, 1599548 + ... + 1600013.

It is an arithmetic number, because the mean of its divisors is an integer number (187174377).

Almost surely, 2^745497713 is an apocalyptic number.

It is an amenable number.

745497713 is a deficient number, since it is larger than the sum of its proper divisors (3199795).

745497713 is a wasteful number, since it uses less digits than its factorization.

745497713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199794.

The product of its digits is 740880, while the sum is 47.

The square root of 745497713 is about 27303.8040023730. The cubic root of 745497713 is about 906.7386022047.

The spelling of 745497713 in words is "seven hundred forty-five million, four hundred ninety-seven thousand, seven hundred thirteen".