68985197 has 2 divisors, whose sum is σ = 68985198. Its totient is φ = 68985196.

The previous prime is 68985193. The next prime is 68985221. The reversal of 68985197 is 79158986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66275881 + 2709316 = 8141^2 + 1646^2 .

It is a cyclic number.

It is not a de Polignac number, because 68985197 - 2² = 68985193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68985193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34492598 + 34492599.

It is an arithmetic number, because the mean of its divisors is an integer number (34492599).

Almost surely, 2^68985197 is an apocalyptic number.

It is an amenable number.

68985197 is a deficient number, since it is larger than the sum of its proper divisors (1).

68985197 is an equidigital number, since it uses as much as digits as its factorization.

68985197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 53.

The square root of 68985197 is about 8305.7327792315. The cubic root of 68985197 is about 410.1272597225.

The spelling of 68985197 in words is "sixty-eight million, nine hundred eighty-five thousand, one hundred ninety-seven".