8619664 has 40 divisors (see below), whose sum is σ = 17766720. Its totient is φ = 4042368.

The previous prime is 8619661. The next prime is 8619683. The reversal of 8619664 is 4669168.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8619661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21514 + ... + 21910.

It is an arithmetic number, because the mean of its divisors is an integer number (444168).

Almost surely, 2^8619664 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 8619664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8883360).

8619664 is an abundant number, since it is smaller than the sum of its proper divisors (9147056).

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

8619664 is a wasteful number, since it uses less digits than its factorization.

8619664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 481 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 8619664 is about 2935.9264295959. The cubic root of 8619664 is about 205.0359960586.

The spelling of 8619664 in words is "eight million, six hundred nineteen thousand, six hundred sixty-four".