19985627 has 2 divisors, whose sum is σ = 19985628. Its totient is φ = 19985626.

The previous prime is 19985621. The next prime is 19985671. The reversal of 19985627 is 72658991.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19985627 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19985621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9992813 + 9992814.

It is an arithmetic number, because the mean of its divisors is an integer number (9992814).

Almost surely, 2^19985627 is an apocalyptic number.

19985627 is a deficient number, since it is larger than the sum of its proper divisors (1).

19985627 is an equidigital number, since it uses as much as digits as its factorization.

19985627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 47.

The square root of 19985627 is about 4470.5287159351. The cubic root of 19985627 is about 271.3767222028.

The spelling of 19985627 in words is "nineteen million, nine hundred eighty-five thousand, six hundred twenty-seven".