16872917 has 2 divisors, whose sum is σ = 16872918. Its totient is φ = 16872916.

The previous prime is 16872913. The next prime is 16872923. The reversal of 16872917 is 71927861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9523396 + 7349521 = 3086^2 + 2711^2 .

It is a cyclic number.

It is not a de Polignac number, because 16872917 - 2² = 16872913 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 (16872913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8436458 + 8436459.

It is an arithmetic number, because the mean of its divisors is an integer number (8436459).

Almost surely, 2^16872917 is an apocalyptic number.

It is an amenable number.

16872917 is a deficient number, since it is larger than the sum of its proper divisors (1).

16872917 is an equidigital number, since it uses as much as digits as its factorization.

16872917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 41.

The square root of 16872917 is about 4107.6656387783. The cubic root of 16872917 is about 256.4858378490.

The spelling of 16872917 in words is "sixteen million, eight hundred seventy-two thousand, nine hundred seventeen".