3606521821 has 8 divisors (see below), whose sum is σ = 4127999040. Its totient is φ = 3086609568.

The previous prime is 3606521801. The next prime is 3606521833. The reversal of 3606521821 is 1281256063.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3606521821 - 2³¹ = 1459038173 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 (3606521801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386296 + ... + 395521.

It is an arithmetic number, because the mean of its divisors is an integer number (515999880).

Almost surely, 2^3606521821 is an apocalyptic number.

It is an amenable number.

3606521821 is a deficient number, since it is larger than the sum of its proper divisors (521477219).

3606521821 is an equidigital number, since it uses as much as digits as its factorization.

3606521821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782483.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 3606521821 is about 60054.3239159346. The cubic root of 3606521821 is about 1533.5438125630.

Adding to 3606521821 its reverse (1281256063), we get a palindrome (4887777884).

The spelling of 3606521821 in words is "three billion, six hundred six million, five hundred twenty-one thousand, eight hundred twenty-one".