8649684 has 36 divisors (see below), whose sum is σ = 22098804. Its totient is φ = 2852352.

The previous prime is 8649677. The next prime is 8649689. The reversal of 8649684 is 4869468.

It is a happy number.

8649684 is a `hidden beast` number, since 86 + 496 + 84 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4112784 + 4536900 = 2028^2 + 2130^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8649689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2254 + ... + 4730.

Almost surely, 2^8649684 is an apocalyptic number.

It is an amenable number.

8649684 is an abundant number, since it is smaller than the sum of its proper divisors (13449120).

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

8649684 is a wasteful number, since it uses less digits than its factorization.

8649684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584 (or 2579 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 8649684 is about 2941.0345118682. The cubic root of 8649684 is about 205.2737488981.

It can be divided in two parts, 86 and 49684, that added together give a triangular number (49770 = T₃₁₅).

The spelling of 8649684 in words is "eight million, six hundred forty-nine thousand, six hundred eighty-four".