3665786648 has 32 divisors (see below), whose sum is σ = 6910263360. Its totient is φ = 1823074560.

The previous prime is 3665786647. The next prime is 3665786651. The reversal of 3665786648 is 8466875663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665786647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1856990 + ... + 1858962.

It is an arithmetic number, because the mean of its divisors is an integer number (215945730).

Almost surely, 2^3665786648 is an apocalyptic number.

It is an amenable number.

3665786648 is a deficient number, since it is larger than the sum of its proper divisors (3244476712).

3665786648 is a wasteful number, since it uses less digits than its factorization.

3665786648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107 (or 3103 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 59.

The square root of 3665786648 is about 60545.7401309126. The cubic root of 3665786648 is about 1541.8982955066.

The spelling of 3665786648 in words is "three billion, six hundred sixty-five million, seven hundred eighty-six thousand, six hundred forty-eight".