3678656717 has 2 divisors, whose sum is σ = 3678656718. Its totient is φ = 3678656716.

The previous prime is 3678656713. The next prime is 3678656743. The reversal of 3678656717 is 7176568763.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2714305801 + 964350916 = 52099^2 + 31054^2 .

It is a cyclic number.

It is not a de Polignac number, because 3678656717 - 2² = 3678656713 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3678656713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1839328358 + 1839328359.

It is an arithmetic number, because the mean of its divisors is an integer number (1839328359).

Almost surely, 2^3678656717 is an apocalyptic number.

It is an amenable number.

3678656717 is a deficient number, since it is larger than the sum of its proper divisors (1).

3678656717 is an equidigital number, since it uses as much as digits as its factorization.

3678656717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8890560, while the sum is 56.

The square root of 3678656717 is about 60651.9308596190. The cubic root of 3678656717 is about 1543.7006516332.

The spelling of 3678656717 in words is "three billion, six hundred seventy-eight million, six hundred fifty-six thousand, seven hundred seventeen".