3615881660 has 12 divisors (see below), whose sum is σ = 7593351528. Its totient is φ = 1446352656.

The previous prime is 3615881651. The next prime is 3615881677. The reversal of 3615881660 is 661885163.

It is a congruent number.

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, 90397022 + ... + 90397061.

It is an arithmetic number, because the mean of its divisors is an integer number (632779294).

Almost surely, 2^3615881660 is an apocalyptic number.

It is an amenable number.

3615881660 is an abundant number, since it is smaller than the sum of its proper divisors (3977469868).

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

3615881660 is a wasteful number, since it uses less digits than its factorization.

3615881660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180794092 (or 180794090 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 3615881660 is about 60132.2015229777. The cubic root of 3615881660 is about 1534.8693116251.

The spelling of 3615881660 in words is "three billion, six hundred fifteen million, eight hundred eighty-one thousand, six hundred sixty".