168998867 has 2 divisors, whose sum is σ = 168998868. Its totient is φ = 168998866.

The previous prime is 168998839. The next prime is 168998909. The reversal of 168998867 is 768899861.

It is a weak prime.

It is an emirp because it is prime and its reverse (768899861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168998867 - 2¹⁴ = 168982483 is a prime.

It is not a weakly prime, because it can be changed into another prime (168992867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84499433 + 84499434.

It is an arithmetic number, because the mean of its divisors is an integer number (84499434).

Almost surely, 2^168998867 is an apocalyptic number.

168998867 is a deficient number, since it is larger than the sum of its proper divisors (1).

168998867 is an equidigital number, since it uses as much as digits as its factorization.

168998867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 62.

The square root of 168998867 is about 12999.9564230039. The cubic root of 168998867 is about 552.8762458421.

The spelling of 168998867 in words is "one hundred sixty-eight million, nine hundred ninety-eight thousand, eight hundred sixty-seven".