168069397 has 2 divisors, whose sum is σ = 168069398. Its totient is φ = 168069396.

The previous prime is 168069371. The next prime is 168069403. The reversal of 168069397 is 793960861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127441521 + 40627876 = 11289^2 + 6374^2 .

It is an emirp because it is prime and its reverse (793960861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168069397 - 2²⁷ = 33851669 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168069397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168069367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84034698 + 84034699.

It is an arithmetic number, because the mean of its divisors is an integer number (84034699).

Almost surely, 2^168069397 is an apocalyptic number.

It is an amenable number.

168069397 is a deficient number, since it is larger than the sum of its proper divisors (1).

168069397 is an equidigital number, since it uses as much as digits as its factorization.

168069397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 168069397 is about 12964.1581678102. The cubic root of 168069397 is about 551.8608014288.

The spelling of 168069397 in words is "one hundred sixty-eight million, sixty-nine thousand, three hundred ninety-seven".