19986063 has 8 divisors (see below), whose sum is σ = 26675376. Its totient is φ = 13310400.

The previous prime is 19986061. The next prime is 19986077. The reversal of 19986063 is 36068991.

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

It is not a de Polignac number, because 19986063 - 2¹ = 19986061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19986061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723 + ... + 6363.

It is an arithmetic number, because the mean of its divisors is an integer number (3334422).

Almost surely, 2^19986063 is an apocalyptic number.

19986063 is a deficient number, since it is larger than the sum of its proper divisors (6689313).

19986063 is a wasteful number, since it uses less digits than its factorization.

19986063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6825.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 19986063 is about 4470.5774794762. The cubic root of 19986063 is about 271.3786956108.

The spelling of 19986063 in words is "nineteen million, nine hundred eighty-six thousand, sixty-three".