18690706 has 8 divisors (see below), whose sum is σ = 28940544. Its totient is φ = 9043860.

The previous prime is 18690691. The next prime is 18690719. The reversal of 18690706 is 60709681.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150670 + ... + 150793.

It is an arithmetic number, because the mean of its divisors is an integer number (3617568).

Almost surely, 2^18690706 is an apocalyptic number.

18690706 is a deficient number, since it is larger than the sum of its proper divisors (10249838).

18690706 is a wasteful number, since it uses less digits than its factorization.

18690706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301496.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 18690706 is about 4323.2749160792. The cubic root of 18690706 is about 265.3843053481.

The spelling of 18690706 in words is "eighteen million, six hundred ninety thousand, seven hundred six".