3621225808 has 20 divisors (see below), whose sum is σ = 7385395360. Its totient is φ = 1715317344.

The previous prime is 3621225791. The next prime is 3621225871. The reversal of 3621225808 is 8085221263.

It is a super-2 number, since 2×3621225808² = 26226552705050505728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5955660 + ... + 5956267.

It is an arithmetic number, because the mean of its divisors is an integer number (369269768).

Almost surely, 2^3621225808 is an apocalyptic number.

3621225808 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

3621225808 is an abundant number, since it is smaller than the sum of its proper divisors (3764169552).

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

3621225808 is a wasteful number, since it uses less digits than its factorization.

3621225808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11911954 (or 11911948 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 3621225808 is about 60176.6217729111. The cubic root of 3621225808 is about 1535.6251006516.

The spelling of 3621225808 in words is "three billion, six hundred twenty-one million, two hundred twenty-five thousand, eight hundred eight".