3606521820 has 96 divisors (see below), whose sum is σ = 11044567296. Its totient is φ = 872064000.

The previous prime is 3606521801. The next prime is 3606521833. The reversal of 3606521820 is 281256063.

It is a super-2 number, since 2×3606521820² = 26013999276272224800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257847 + ... + 271473.

It is an arithmetic number, because the mean of its divisors is an integer number (115047576).

Almost surely, 2^3606521820 is an apocalyptic number.

3606521820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3606521820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5522283648).

3606521820 is an abundant number, since it is smaller than the sum of its proper divisors (7438045476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3606521820 is a wasteful number, since it uses less digits than its factorization.

3606521820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14051 (or 14049 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 3606521820 is about 60054.3239076089. The cubic root of 3606521820 is about 1533.5438124213.

Adding to 3606521820 its reverse (281256063), we get a palindrome (3887777883).

The spelling of 3606521820 in words is "three billion, six hundred six million, five hundred twenty-one thousand, eight hundred twenty".