3299580721 has 4 divisors (see below), whose sum is σ = 3330418032. Its totient is φ = 3268743412.

The previous prime is 3299580719. The next prime is 3299580761. The reversal of 3299580721 is 1270859923.

3299580721 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, and also an emirpimes, since its reverse is a distinct semiprime: 1270859923 = 929 ⋅1367987.

It is a cyclic number.

It is not a de Polignac number, because 3299580721 - 2¹ = 3299580719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3299580761) 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, 15418495 + ... + 15418708.

It is an arithmetic number, because the mean of its divisors is an integer number (832604508).

Almost surely, 2^3299580721 is an apocalyptic number.

It is an amenable number.

3299580721 is a deficient number, since it is larger than the sum of its proper divisors (30837311).

3299580721 is a wasteful number, since it uses less digits than its factorization.

3299580721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30837310.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 3299580721 is about 57441.9769941808. The cubic root of 3299580721 is about 1488.7424972627.

The spelling of 3299580721 in words is "three billion, two hundred ninety-nine million, five hundred eighty thousand, seven hundred twenty-one".