3245644621 has 4 divisors (see below), whose sum is σ = 3247794144. Its totient is φ = 3243495100.

The previous prime is 3245644561. The next prime is 3245644631. The reversal of 3245644621 is 1264465423.

3245644621 is digitally balanced in base 2, 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3245644621 - 2²⁹ = 2708773709 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 (3245644631) 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, 1072495 + ... + 1075516.

It is an arithmetic number, because the mean of its divisors is an integer number (811948536).

Almost surely, 2^3245644621 is an apocalyptic number.

It is an amenable number.

3245644621 is a deficient number, since it is larger than the sum of its proper divisors (2149523).

3245644621 is a wasteful number, since it uses less digits than its factorization.

3245644621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149522.

The product of its digits is 138240, while the sum is 37.

The square root of 3245644621 is about 56970.5592477378. The cubic root of 3245644621 is about 1480.5860567058.

It can be divided in two parts, 32456 and 44621, that added together give a palindrome (77077).

The spelling of 3245644621 in words is "three billion, two hundred forty-five million, six hundred forty-four thousand, six hundred twenty-one".