3365646681 has 24 divisors (see below), whose sum is σ = 4816510560. Its totient is φ = 2089603584.

The previous prime is 3365646671. The next prime is 3365646721. The reversal of 3365646681 is 1866465633.

3365646681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3365646681 - 2⁶ = 3365646617 is a prime.

It is a super-2 number, since 2×3365646681² = 22655155162652631522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3365646681.

It is not an unprimeable number, because it can be changed into a prime (3365646611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37561 + ... + 90233.

It is an arithmetic number, because the mean of its divisors is an integer number (200687940).

Almost surely, 2^3365646681 is an apocalyptic number.

It is an amenable number.

3365646681 is a deficient number, since it is larger than the sum of its proper divisors (1450863879).

3365646681 is a wasteful number, since it uses less digits than its factorization.

3365646681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52773 (or 52754 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 48.

The square root of 3365646681 is about 58014.1937891065. The cubic root of 3365646681 is about 1498.6130410697.

The spelling of 3365646681 in words is "three billion, three hundred sixty-five million, six hundred forty-six thousand, six hundred eighty-one".