3656223871 has 4 divisors (see below), whose sum is σ = 3669715744. Its totient is φ = 3642732000.

The previous prime is 3656223841. The next prime is 3656223889. The reversal of 3656223871 is 1783226563.

3656223871 is digitally balanced in base 3, 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.

It is a cyclic number.

It is not a de Polignac number, because 3656223871 - 2⁷ = 3656223743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3656223841) 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, 6745530 + ... + 6746071.

It is an arithmetic number, because the mean of its divisors is an integer number (917428936).

Almost surely, 2^3656223871 is an apocalyptic number.

3656223871 is a deficient number, since it is larger than the sum of its proper divisors (13491873).

3656223871 is a wasteful number, since it uses less digits than its factorization.

3656223871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13491872.

The product of its digits is 362880, while the sum is 43.

The square root of 3656223871 is about 60466.7170516144. The cubic root of 3656223871 is about 1540.5563671126.

The spelling of 3656223871 in words is "three billion, six hundred fifty-six million, two hundred twenty-three thousand, eight hundred seventy-one".