18680684 has 24 divisors (see below), whose sum is σ = 35954688. Its totient is φ = 8421840.

The previous prime is 18680659. The next prime is 18680687. The reversal of 18680684 is 48608681.

It is not an unprimeable number, because it can be changed into a prime (18680687) 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, 3917 + ... + 7259.

It is an arithmetic number, because the mean of its divisors is an integer number (1498112).

Almost surely, 2^18680684 is an apocalyptic number.

It is an amenable number.

18680684 is a deficient number, since it is larger than the sum of its proper divisors (17274004).

18680684 is a wasteful number, since it uses less digits than its factorization.

18680684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485 (or 3483 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 18680684 is about 4322.1156856336. The cubic root of 18680684 is about 265.3368636405.

The spelling of 18680684 in words is "eighteen million, six hundred eighty thousand, six hundred eighty-four".