16614391 has 2 divisors, whose sum is σ = 16614392. Its totient is φ = 16614390.

The previous prime is 16614343. The next prime is 16614421. The reversal of 16614391 is 19341661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16614391 - 2²³ = 8225783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16614331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8307195 + 8307196.

It is an arithmetic number, because the mean of its divisors is an integer number (8307196).

Almost surely, 2^16614391 is an apocalyptic number.

16614391 is a deficient number, since it is larger than the sum of its proper divisors (1).

16614391 is an equidigital number, since it uses as much as digits as its factorization.

16614391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 16614391 is about 4076.0754409113. The cubic root of 16614391 is about 255.1691355168.

The spelling of 16614391 in words is "sixteen million, six hundred fourteen thousand, three hundred ninety-one".