3655004661 has 64 divisors (see below), whose sum is σ = 6843709440. Its totient is φ = 1872616320.

The previous prime is 3655004657. The next prime is 3655004663. The reversal of 3655004661 is 1664005563.

3655004661 is a `hidden beast` number, since 3 + 6 + 550 + 0 + 46 + 61 = 666.

It is not a de Polignac number, because 3655004661 - 2² = 3655004657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3655004663) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 139726 + ... + 163808.

It is an arithmetic number, because the mean of its divisors is an integer number (106932960).

Almost surely, 2^3655004661 is an apocalyptic number.

It is an amenable number.

3655004661 is a deficient number, since it is larger than the sum of its proper divisors (3188704779).

3655004661 is a wasteful number, since it uses less digits than its factorization.

3655004661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24183 (or 24177 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 3655004661 is about 60456.6345490716. The cubic root of 3655004661 is about 1540.3851093150.

The spelling of 3655004661 in words is "three billion, six hundred fifty-five million, four thousand, six hundred sixty-one".