3648091 has 4 divisors (see below), whose sum is σ = 3651912. Its totient is φ = 3644272.

The previous prime is 3648079. The next prime is 3648101. The reversal of 3648091 is 1908463.

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: 1908463 = 677 ⋅2819.

It is a cyclic number.

It is not a de Polignac number, because 3648091 - 2¹⁹ = 3123803 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3648031) 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, 951 + ... + 2863.

It is an arithmetic number, because the mean of its divisors is an integer number (912978).

Almost surely, 2^3648091 is an apocalyptic number.

3648091 is a deficient number, since it is larger than the sum of its proper divisors (3821).

3648091 is a wasteful number, since it uses less digits than its factorization.

3648091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 3648091 is about 1909.9976439776. The cubic root of 3648091 is about 153.9413252609.

The spelling of 3648091 in words is "three million, six hundred forty-eight thousand, ninety-one".