8646864 has 40 divisors (see below), whose sum is σ = 22504512. Its totient is φ = 2860800.

The previous prime is 8646853. The next prime is 8646889. The reversal of 8646864 is 4686468.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6652 + ... + 7844.

Almost surely, 2^8646864 is an apocalyptic number.

It is an amenable number.

8646864 is an abundant number, since it is smaller than the sum of its proper divisors (13857648).

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

8646864 is a wasteful number, since it uses less digits than its factorization.

8646864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355 (or 1349 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 8646864 is about 2940.5550496462. Note that the first 3 decimals coincide. The cubic root of 8646864 is about 205.2514384534.

It can be divided in two parts, 86 and 46864, that multiplied together give a palindrome (4030304).

The spelling of 8646864 in words is "eight million, six hundred forty-six thousand, eight hundred sixty-four".