3655563 has 8 divisors (see below), whose sum is σ = 5005968. Its totient is φ = 2371104.

The previous prime is 3655541. The next prime is 3655579.

3655563 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3655563 - 2⁶ = 3655499 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 3 + 6 + 5 + 5⁵ + 5⁹ + 6⁸ + 3⁹ .

It is not an unprimeable number, because it can be changed into a prime (3655513) 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, 16356 + ... + 16577.

It is an arithmetic number, because the mean of its divisors is an integer number (625746).

Almost surely, 2^3655563 is an apocalyptic number.

3655563 is a deficient number, since it is larger than the sum of its proper divisors (1350405).

3655563 is a wasteful number, since it uses less digits than its factorization.

3655563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32973.

The product of its digits is 40500, while the sum is 33.

The square root of 3655563 is about 1911.9526667781. The cubic root of 3655563 is about 154.0463541800.

The spelling of 3655563 in words is "three million, six hundred fifty-five thousand, five hundred sixty-three".