7713645217 has 16 divisors (see below), whose sum is σ = 8227256832. Its totient is φ = 7215155200.

The previous prime is 7713645197. The next prime is 7713645239. The reversal of 7713645217 is 7125463177.

It is a happy number.

It is not a de Polignac number, because 7713645217 - 2²⁷ = 7579427489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7713642217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1728453 + ... + 1732909.

It is an arithmetic number, because the mean of its divisors is an integer number (514203552).

Almost surely, 2^7713645217 is an apocalyptic number.

It is an amenable number.

7713645217 is a deficient number, since it is larger than the sum of its proper divisors (513611615).

7713645217 is a wasteful number, since it uses less digits than its factorization.

7713645217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6128.

The product of its digits is 246960, while the sum is 43.

The square root of 7713645217 is about 87827.3602984856. The cubic root of 7713645217 is about 1975.8465818461.

The spelling of 7713645217 in words is "seven billion, seven hundred thirteen million, six hundred forty-five thousand, two hundred seventeen".