3284550721 has 9 divisors (see below), whose sum is σ = 3312233571. Its totient is φ = 3257098752.

The previous prime is 3284550677. The next prime is 3284550733. The reversal of 3284550721 is 1270554823.

The square root of 3284550721 is 57311.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3233628225 + 50922496 = 56865^2 + 7136^2 .

It is not a de Polignac number, because 3284550721 - 2⁷ = 3284550593 is a prime.

It is a super-3 number, since 3×3284550721³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3284350721) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12780225 + ... + 12780481.

Almost surely, 2^3284550721 is an apocalyptic number.

3284550721 is the 57311-st square number.

3284550721 is the 28656-th centered octagonal number.

It is an amenable number.

3284550721 is a deficient number, since it is larger than the sum of its proper divisors (27682850).

3284550721 is an frugal number, since it uses more digits than its factorization.

3284550721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The cubic root of 3284550721 is about 1486.4785873181.

The spelling of 3284550721 in words is "three billion, two hundred eighty-four million, five hundred fifty thousand, seven hundred twenty-one".