8663964 has 12 divisors (see below), whose sum is σ = 20215944. Its totient is φ = 2887984.

The previous prime is 8663959. The next prime is 8663969. The reversal of 8663964 is 4693668.

It is an interprime number because it is at equal distance from previous prime (8663959) and next prime (8663969).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8663969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360987 + ... + 361010.

It is an arithmetic number, because the mean of its divisors is an integer number (1684662).

Almost surely, 2^8663964 is an apocalyptic number.

It is an amenable number.

8663964 is an abundant number, since it is smaller than the sum of its proper divisors (11551980).

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

8663964 is a wasteful number, since it uses less digits than its factorization.

8663964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722004 (or 722002 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 8663964 is about 2943.4612278744. The cubic root of 8663964 is about 205.3866508063.

Adding to 8663964 its product of digits (186624), we get a palindrome (8850588).

The spelling of 8663964 in words is "eight million, six hundred sixty-three thousand, nine hundred sixty-four".