3648871 has 4 divisors (see below), whose sum is σ = 3652744. Its totient is φ = 3645000.

The previous prime is 3648859. The next prime is 3648899. The reversal of 3648871 is 1788463.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1788463 = 257 ⋅6959.

It is a 4-Lehmer number, since φ(3648871) divides (3648871-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 3648871 - 2¹⁷ = 3517799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3648871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649871) 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, 496 + ... + 2746.

It is an arithmetic number, because the mean of its divisors is an integer number (913186).

Almost surely, 2^3648871 is an apocalyptic number.

3648871 is a deficient number, since it is larger than the sum of its proper divisors (3873).

3648871 is a wasteful number, since it uses less digits than its factorization.

3648871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3872.

The product of its digits is 32256, while the sum is 37.

The square root of 3648871 is about 1910.2018217979. The cubic root of 3648871 is about 153.9522959007.

The spelling of 3648871 in words is "three million, six hundred forty-eight thousand, eight hundred seventy-one".