8761664 has 28 divisors (see below), whose sum is σ = 18411444. Its totient is φ = 4122624.

The previous prime is 8761639. The next prime is 8761691. The reversal of 8761664 is 4661678.

It can be written as a sum of positive squares in 2 ways, for example, as 6801664 + 1960000 = 2608^2 + 1400^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2939 + ... + 5114.

Almost surely, 2^8761664 is an apocalyptic number.

It is an amenable number.

8761664 is an abundant number, since it is smaller than the sum of its proper divisors (9649780).

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

8761664 is a wasteful number, since it uses less digits than its factorization.

8761664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8082 (or 8072 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 8761664 is about 2960.0108107911. The cubic root of 8761664 is about 206.1557875193.

It can be divided in two parts, 87616 and 64, that multiplied together give a square (5607424 = 2368²).

The spelling of 8761664 in words is "eight million, seven hundred sixty-one thousand, six hundred sixty-four".