168466997 has 2 divisors, whose sum is σ = 168466998. Its totient is φ = 168466996.

The previous prime is 168466993. The next prime is 168467069. The reversal of 168466997 is 799664861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146555236 + 21911761 = 12106^2 + 4681^2 .

It is a cyclic number.

It is not a de Polignac number, because 168466997 - 2² = 168466993 is a prime.

It is a super-2 number, since 2×168466997² = 56762258156396018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168466993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84233498 + 84233499.

It is an arithmetic number, because the mean of its divisors is an integer number (84233499).

Almost surely, 2^168466997 is an apocalyptic number.

It is an amenable number.

168466997 is a deficient number, since it is larger than the sum of its proper divisors (1).

168466997 is an equidigital number, since it uses as much as digits as its factorization.

168466997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 56.

The square root of 168466997 is about 12979.4836954326. The cubic root of 168466997 is about 552.2956358071.

The spelling of 168466997 in words is "one hundred sixty-eight million, four hundred sixty-six thousand, nine hundred ninety-seven".