3284530721 has 4 divisors (see below), whose sum is σ = 3286628352. Its totient is φ = 3282433092.

The previous prime is 3284530687. The next prime is 3284530723. The reversal of 3284530721 is 1270354823.

3284530721 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 3284530721 - 2³⁰ = 2210788897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3284530723) 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, 1046465 + ... + 1049598.

It is an arithmetic number, because the mean of its divisors is an integer number (821657088).

Almost surely, 2^3284530721 is an apocalyptic number.

It is an amenable number.

3284530721 is a deficient number, since it is larger than the sum of its proper divisors (2097631).

3284530721 is a wasteful number, since it uses less digits than its factorization.

3284530721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097630.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 3284530721 is about 57310.8255131611. The cubic root of 3284530721 is about 1486.4755702000.

The spelling of 3284530721 in words is "three billion, two hundred eighty-four million, five hundred thirty thousand, seven hundred twenty-one".