17198861 has 2 divisors, whose sum is σ = 17198862. Its totient is φ = 17198860.

The previous prime is 17198789. The next prime is 17198869. The reversal of 17198861 is 16889171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13645636 + 3553225 = 3694^2 + 1885^2 .

It is a cyclic number.

It is not a de Polignac number, because 17198861 - 2¹⁰ = 17197837 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 (17198869) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8599430 + 8599431.

It is an arithmetic number, because the mean of its divisors is an integer number (8599431).

Almost surely, 2^17198861 is an apocalyptic number.

It is an amenable number.

17198861 is a deficient number, since it is larger than the sum of its proper divisors (1).

17198861 is an equidigital number, since it uses as much as digits as its factorization.

17198861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 41.

The square root of 17198861 is about 4147.1509497485. The cubic root of 17198861 is about 258.1268780826.

The spelling of 17198861 in words is "seventeen million, one hundred ninety-eight thousand, eight hundred sixty-one".