8663490 has 64 divisors (see below), whose sum is σ = 25211520. Its totient is φ = 2099520.

The previous prime is 8663471. The next prime is 8663497. The reversal of 8663490 is 943668.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8663497) 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, 1512 + ... + 4428.

It is an arithmetic number, because the mean of its divisors is an integer number (393930).

Almost surely, 2^8663490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8663490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12605760).

8663490 is an abundant number, since it is smaller than the sum of its proper divisors (16548030).

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

8663490 is a wasteful number, since it uses less digits than its factorization.

8663490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944 (or 2938 counting only the distinct ones).

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

The square root of 8663490 is about 2943.3807093205. The cubic root of 8663490 is about 205.3829052133.

It can be divided in two parts, 866 and 3490, that added together give a square (4356 = 66²).

The spelling of 8663490 in words is "eight million, six hundred sixty-three thousand, four hundred ninety".