3615275664 has 360 divisors, whose sum is σ = 13831114752. Its totient is φ = 866557440.

The previous prime is 3615275663. The next prime is 3615275683. The reversal of 3615275664 is 4665725163.

3615275664 is a `hidden beast` number, since 3 + 61 + 5 + 27 + 566 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (3615275663) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1007217 + ... + 1010799.

Almost surely, 2^3615275664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3615275664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6915557376).

3615275664 is an abundant number, since it is smaller than the sum of its proper divisors (10215839088).

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

3615275664 is a wasteful number, since it uses less digits than its factorization.

3615275664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635 (or 3619 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 3615275664 is about 60127.1624475993. The cubic root of 3615275664 is about 1534.7835624481.

The spelling of 3615275664 in words is "three billion, six hundred fifteen million, two hundred seventy-five thousand, six hundred sixty-four".