68532397 has 2 divisors, whose sum is σ = 68532398. Its totient is φ = 68532396.

The previous prime is 68532383. The next prime is 68532437. The reversal of 68532397 is 79323586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46498761 + 22033636 = 6819^2 + 4694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68532397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68532367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34266198 + 34266199.

It is an arithmetic number, because the mean of its divisors is an integer number (34266199).

Almost surely, 2^68532397 is an apocalyptic number.

It is an amenable number.

68532397 is a deficient number, since it is larger than the sum of its proper divisors (1).

68532397 is an equidigital number, since it uses as much as digits as its factorization.

68532397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 68532397 is about 8278.4296216130. The cubic root of 68532397 is about 409.2279681526.

The spelling of 68532397 in words is "sixty-eight million, five hundred thirty-two thousand, three hundred ninety-seven".