3648971 has 4 divisors (see below), whose sum is σ = 3656472. Its totient is φ = 3641472.

The previous prime is 3648947. The next prime is 3648989. The reversal of 3648971 is 1798463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1798463 = 61 ⋅29483.

It is a cyclic number.

It is not a de Polignac number, because 3648971 - 2¹⁰ = 3647947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3648941) 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, 2966 + ... + 4011.

It is an arithmetic number, because the mean of its divisors is an integer number (914118).

Almost surely, 2^3648971 is an apocalyptic number.

3648971 is a deficient number, since it is larger than the sum of its proper divisors (7501).

3648971 is an equidigital number, since it uses as much as digits as its factorization.

3648971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7500.

The product of its digits is 36288, while the sum is 38.

The square root of 3648971 is about 1910.2279968632. The cubic root of 3648971 is about 153.9537022799.

The spelling of 3648971 in words is "three million, six hundred forty-eight thousand, nine hundred seventy-one".