3656684417 has 4 divisors (see below), whose sum is σ = 3815670720. Its totient is φ = 3497698116.

The previous prime is 3656684401. The next prime is 3656684429. The reversal of 3656684417 is 7144866563.

3656684417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3656684417 - 2⁴ = 3656684401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3656683417) 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, 79493117 + ... + 79493162.

It is an arithmetic number, because the mean of its divisors is an integer number (953917680).

Almost surely, 2^3656684417 is an apocalyptic number.

It is an amenable number.

3656684417 is a deficient number, since it is larger than the sum of its proper divisors (158986303).

3656684417 is a wasteful number, since it uses less digits than its factorization.

3656684417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158986302.

The product of its digits is 2903040, while the sum is 50.

The square root of 3656684417 is about 60470.5251920305. The cubic root of 3656684417 is about 1540.6210483530.

The spelling of 3656684417 in words is "three billion, six hundred fifty-six million, six hundred eighty-four thousand, four hundred seventeen".