16872017 has 2 divisors, whose sum is σ = 16872018. Its totient is φ = 16872016.

The previous prime is 16871999. The next prime is 16872047. The reversal of 16872017 is 71027861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11669056 + 5202961 = 3416^2 + 2281^2 .

It is a cyclic number.

It is not a de Polignac number, because 16872017 - 2²² = 12677713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16872047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8436008 + 8436009.

It is an arithmetic number, because the mean of its divisors is an integer number (8436009).

Almost surely, 2^16872017 is an apocalyptic number.

It is an amenable number.

16872017 is a deficient number, since it is larger than the sum of its proper divisors (1).

16872017 is an equidigital number, since it uses as much as digits as its factorization.

16872017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 16872017 is about 4107.5560860444. The cubic root of 16872017 is about 256.4812774568.

Adding to 16872017 its reverse (71027861), we get a palindrome (87899878).

The spelling of 16872017 in words is "sixteen million, eight hundred seventy-two thousand, seventeen".