30683686 has 8 divisors (see below), whose sum is σ = 50209704. Its totient is φ = 13947120.

The previous prime is 30683683. The next prime is 30683701. The reversal of 30683686 is 68638603.

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 (30683683) by changing a digit.

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, 697335 + ... + 697378.

It is an arithmetic number, because the mean of its divisors is an integer number (6276213).

Almost surely, 2^30683686 is an apocalyptic number.

30683686 is a deficient number, since it is larger than the sum of its proper divisors (19526018).

30683686 is a wasteful number, since it uses less digits than its factorization.

30683686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394726.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 30683686 is about 5539.2856940223. The cubic root of 30683686 is about 313.0659559483.

The spelling of 30683686 in words is "thirty million, six hundred eighty-three thousand, six hundred eighty-six".