3655646253 has 48 divisors (see below), whose sum is σ = 6124959360. Its totient is φ = 2057882112.

The previous prime is 3655646231. The next prime is 3655646257. The reversal of 3655646253 is 3526465563.

3655646253 is a `hidden beast` number, since 3 + 6 + 556 + 46 + 2 + 53 = 666.

It is not a de Polignac number, because 3655646253 - 2⁸ = 3655645997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3655646199 and 3655646208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3655646257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1753950 + ... + 1756032.

It is an arithmetic number, because the mean of its divisors is an integer number (127603320).

Almost surely, 2^3655646253 is an apocalyptic number.

It is an amenable number.

3655646253 is a deficient number, since it is larger than the sum of its proper divisors (2469313107).

3655646253 is a wasteful number, since it uses less digits than its factorization.

3655646253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498 (or 2495 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 45.

The square root of 3655646253 is about 60461.9405328675. The cubic root of 3655646253 is about 1540.4752360529.

The spelling of 3655646253 in words is "three billion, six hundred fifty-five million, six hundred forty-six thousand, two hundred fifty-three".