8963640 has 96 divisors (see below), whose sum is σ = 33302880. Its totient is φ = 2048256.

The previous prime is 8963627. The next prime is 8963653. The reversal of 8963640 is 463698.

8963640 is a `hidden beast` number, since 8 + 9 + 6 + 3 + 640 = 666.

It is an interprime number because it is at equal distance from previous prime (8963627) and next prime (8963653).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8963595 and 8963604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 742 + ... + 4298.

It is an arithmetic number, because the mean of its divisors is an integer number (346905).

Almost surely, 2^8963640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8963640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16651440).

8963640 is an abundant number, since it is smaller than the sum of its proper divisors (24339240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8963640 is a wasteful number, since it uses less digits than its factorization.

8963640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581 (or 3574 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 8963640 is about 2993.9338670051. The cubic root of 8963640 is about 207.7278862759.

It can be divided in two parts, 89636 and 40, that added together give a triangular number (89676 = T₄₂₃).

The spelling of 8963640 in words is "eight million, nine hundred sixty-three thousand, six hundred forty".