3665298560 has 128 divisors (see below), whose sum is σ = 10924640640. Its totient is φ = 1142415360.

The previous prime is 3665298523. The next prime is 3665298587. The reversal of 3665298560 is 658925663.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 3665298499 and 3665298508.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12092 + ... + 86468.

It is an arithmetic number, because the mean of its divisors is an integer number (85348755).

Almost surely, 2^3665298560 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 3665298560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5462320320).

3665298560 is an abundant number, since it is smaller than the sum of its proper divisors (7259342080).

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

3665298560 is a wasteful number, since it uses less digits than its factorization.

3665298560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74414 (or 74402 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 50.

The square root of 3665298560 is about 60541.7092589894. The cubic root of 3665298560 is about 1541.8298594944.

The spelling of 3665298560 in words is "three billion, six hundred sixty-five million, two hundred ninety-eight thousand, five hundred sixty".