168666079 has 2 divisors, whose sum is σ = 168666080. Its totient is φ = 168666078.

The previous prime is 168666077. The next prime is 168666101. The reversal of 168666079 is 970666861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168666079 - 2¹ = 168666077 is a prime.

Together with 168666077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168666077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84333039 + 84333040.

It is an arithmetic number, because the mean of its divisors is an integer number (84333040).

Almost surely, 2^168666079 is an apocalyptic number.

168666079 is a deficient number, since it is larger than the sum of its proper divisors (1).

168666079 is an equidigital number, since it uses as much as digits as its factorization.

168666079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 168666079 is about 12987.1505342781. The cubic root of 168666079 is about 552.5131043895.

The spelling of 168666079 in words is "one hundred sixty-eight million, six hundred sixty-six thousand, seventy-nine".