16639027 has 2 divisors, whose sum is σ = 16639028. Its totient is φ = 16639026.

The previous prime is 16639019. The next prime is 16639057. The reversal of 16639027 is 72093661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16639027 - 2³ = 16639019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16638983 and 16639001.

It is not a weakly prime, because it can be changed into another prime (16639057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8319513 + 8319514.

It is an arithmetic number, because the mean of its divisors is an integer number (8319514).

Almost surely, 2^16639027 is an apocalyptic number.

16639027 is a deficient number, since it is larger than the sum of its proper divisors (1).

16639027 is an equidigital number, since it uses as much as digits as its factorization.

16639027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 16639027 is about 4079.0963460061. The cubic root of 16639027 is about 255.2951957543.

It can be divided in two parts, 166 and 39027, that added together give a palindrome (39193).

The spelling of 16639027 in words is "sixteen million, six hundred thirty-nine thousand, twenty-seven".