745406467717 has 4 divisors (see below), whose sum is σ = 745410182796. Its totient is φ = 745402752640.

The previous prime is 745406467703. The next prime is 745406467727. The reversal of 745406467717 is 717764604547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 717764604547 = 328721 ⋅2183507.

It can be written as a sum of positive squares in 2 ways, for example, as 698626833921 + 46779633796 = 835839^2 + 216286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745406467717 is a prime.

It is a super-2 number, since 2×745406467717² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745406467727) 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, 1538284 + ... + 1963957.

It is an arithmetic number, because the mean of its divisors is an integer number (186352545699).

Almost surely, 2^745406467717 is an apocalyptic number.

It is an amenable number.

745406467717 is a deficient number, since it is larger than the sum of its proper divisors (3715079).

745406467717 is a wasteful number, since it uses less digits than its factorization.

745406467717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3715078.

The product of its (nonzero) digits is 27659520, while the sum is 58.

The spelling of 745406467717 in words is "seven hundred forty-five billion, four hundred six million, four hundred sixty-seven thousand, seven hundred seventeen".