3661628620 has 24 divisors (see below), whose sum is σ = 8280914544. Its totient is φ = 1351985856.

The previous prime is 3661628599. The next prime is 3661628627. The reversal of 3661628620 is 268261663.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3661628627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7041334 + ... + 7041853.

It is an arithmetic number, because the mean of its divisors is an integer number (345038106).

Almost surely, 2^3661628620 is an apocalyptic number.

It is an amenable number.

3661628620 is an abundant number, since it is smaller than the sum of its proper divisors (4619285924).

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

3661628620 is a wasteful number, since it uses less digits than its factorization.

3661628620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14083209 (or 14083207 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 3661628620 is about 60511.3924810857. The cubic root of 3661628620 is about 1541.3150935472.

The spelling of 3661628620 in words is "three billion, six hundred sixty-one million, six hundred twenty-eight thousand, six hundred twenty".