3245621 has 4 divisors (see below), whose sum is σ = 3249312. Its totient is φ = 3241932.

The previous prime is 3245611. The next prime is 3245659. The reversal of 3245621 is 1265423.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1265423 = 233 ⋅5431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3245621 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 2¹¹ + 4¹⁰ + 5⁷ + 6² + 2²¹ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3245611) 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, 326 + ... + 2568.

It is an arithmetic number, because the mean of its divisors is an integer number (812328).

Almost surely, 2^3245621 is an apocalyptic number.

It is an amenable number.

3245621 is a deficient number, since it is larger than the sum of its proper divisors (3691).

3245621 is a wasteful number, since it uses less digits than its factorization.

3245621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690.

The product of its digits is 1440, while the sum is 23.

The square root of 3245621 is about 1801.5607122714. The cubic root of 3245621 is about 148.0582464917.

The spelling of 3245621 in words is "three million, two hundred forty-five thousand, six hundred twenty-one".