18506706 has 8 divisors (see below), whose sum is σ = 37013424. Its totient is φ = 6168900.

The previous prime is 18506671. The next prime is 18506717. The reversal of 18506706 is 60760581.

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

18506706 is an admirable 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, 1542220 + ... + 1542231.

It is an arithmetic number, because the mean of its divisors is an integer number (4626678).

Almost surely, 2^18506706 is an apocalyptic number.

18506706 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18506706 is a wasteful number, since it uses less digits than its factorization.

18506706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084456.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 18506706 is about 4301.9421195548. The cubic root of 18506706 is about 264.5105764165.

The spelling of 18506706 in words is "eighteen million, five hundred six thousand, seven hundred six".