18680606 has 8 divisors (see below), whose sum is σ = 32023920. Its totient is φ = 8005968.

The previous prime is 18680593. The next prime is 18680609. The reversal of 18680606 is 60608681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18680609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667151 + ... + 667178.

It is an arithmetic number, because the mean of its divisors is an integer number (4002990).

Almost surely, 2^18680606 is an apocalyptic number.

18680606 is a deficient number, since it is larger than the sum of its proper divisors (13343314).

18680606 is a wasteful number, since it uses less digits than its factorization.

18680606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334338.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 18680606 is about 4322.1066622655. The cubic root of 18680606 is about 265.3364943410.

The spelling of 18680606 in words is "eighteen million, six hundred eighty thousand, six hundred six".