2265506663 has 16 divisors (see below), whose sum is σ = 2627444736. Its totient is φ = 1913269920.

The previous prime is 2265506653. The next prime is 2265506669. The reversal of 2265506663 is 3666055622.

It is a cyclic number.

It is not a de Polignac number, because 2265506663 - 2⁶ = 2265506599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2265506663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2265506669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217433 + ... + 227613.

It is an arithmetic number, because the mean of its divisors is an integer number (164215296).

Almost surely, 2^2265506663 is an apocalyptic number.

2265506663 is a deficient number, since it is larger than the sum of its proper divisors (361938073).

2265506663 is a wasteful number, since it uses less digits than its factorization.

2265506663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10654.

The product of its (nonzero) digits is 388800, while the sum is 41.

The square root of 2265506663 is about 47597.3388226695. The cubic root of 2265506663 is about 1313.3741008257.

The spelling of 2265506663 in words is "two billion, two hundred sixty-five million, five hundred six thousand, six hundred sixty-three".