3621808260 has 144 divisors (see below), whose sum is σ = 12988684800. Its totient is φ = 799287552.

The previous prime is 3621808219. The next prime is 3621808271. The reversal of 3621808260 is 628081263.

3621808260 is a `hidden beast` number, since 3 + 621 + 8 + 0 + 8 + 26 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13020 + ... + 86099.

It is an arithmetic number, because the mean of its divisors is an integer number (90199200).

Almost surely, 2^3621808260 is an apocalyptic number.

3621808260 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 3621808260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6494342400).

3621808260 is an abundant number, since it is smaller than the sum of its proper divisors (9366876540).

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

3621808260 is a wasteful number, since it uses less digits than its factorization.

3621808260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99170 (or 99165 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 3621808260 is about 60181.4610989132. The cubic root of 3621808260 is about 1535.7074282029.

The spelling of 3621808260 in words is "three billion, six hundred twenty-one million, eight hundred eight thousand, two hundred sixty".