3661530220 has 12 divisors (see below), whose sum is σ = 7689213504. Its totient is φ = 1464612080.

The previous prime is 3661530209. The next prime is 3661530239. The reversal of 3661530220 is 220351663.

3661530220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91538236 + ... + 91538275.

It is an arithmetic number, because the mean of its divisors is an integer number (640767792).

Almost surely, 2^3661530220 is an apocalyptic number.

It is an amenable number.

3661530220 is an abundant number, since it is smaller than the sum of its proper divisors (4027683284).

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

3661530220 is a wasteful number, since it uses less digits than its factorization.

3661530220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183076520 (or 183076518 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 3661530220 is about 60510.5794055882. The cubic root of 3661530220 is about 1541.3012866887.

Adding to 3661530220 its reverse (220351663), we get a palindrome (3881881883).

The spelling of 3661530220 in words is "three billion, six hundred sixty-one million, five hundred thirty thousand, two hundred twenty".