8601663 has 32 divisors (see below), whose sum is σ = 13791232. Its totient is φ = 4665600.

The previous prime is 8601653. The next prime is 8601667. The reversal of 8601663 is 3661068.

It is not a de Polignac number, because 8601663 - 2⁴ = 8601647 is a prime.

It is an Ulam number.

8601663 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8601663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8601667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47433 + ... + 47613.

It is an arithmetic number, because the mean of its divisors is an integer number (430976).

Almost surely, 2^8601663 is an apocalyptic number.

8601663 is a deficient number, since it is larger than the sum of its proper divisors (5189569).

8601663 is a wasteful number, since it uses less digits than its factorization.

8601663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 8601663 is about 2932.8591851639. The cubic root of 8601663 is about 204.8931666230.

The spelling of 8601663 in words is "eight million, six hundred one thousand, six hundred sixty-three".