20000684065 has 8 divisors (see below), whose sum is σ = 24002982720. Its totient is φ = 15999106032.

The previous prime is 20000684047. The next prime is 20000684089. The reversal of 20000684065 is 56048600002.

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

It is a cyclic number.

It is not a de Polignac number, because 20000684065 - 2¹⁷ = 20000552993 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 117085 + ... + 231754.

It is an arithmetic number, because the mean of its divisors is an integer number (3000372840).

Almost surely, 2^20000684065 is an apocalyptic number.

It is an amenable number.

20000684065 is a deficient number, since it is larger than the sum of its proper divisors (4002298655).

20000684065 is a wasteful number, since it uses less digits than its factorization.

20000684065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360311.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 20000684065 in words is "twenty billion, six hundred eighty-four thousand, sixty-five".