68380061 has 2 divisors, whose sum is σ = 68380062. Its totient is φ = 68380060.

The previous prime is 68380021. The next prime is 68380063. The reversal of 68380061 is 16008386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67551961 + 828100 = 8219^2 + 910^2 .

It is a cyclic number.

It is not a de Polignac number, because 68380061 - 2¹⁰ = 68379037 is a prime.

Together with 68380063, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68380063) 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, 34190030 + 34190031.

It is an arithmetic number, because the mean of its divisors is an integer number (34190031).

Almost surely, 2^68380061 is an apocalyptic number.

It is an amenable number.

68380061 is a deficient number, since it is larger than the sum of its proper divisors (1).

68380061 is an equidigital number, since it uses as much as digits as its factorization.

68380061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 68380061 is about 8269.2237241473. The cubic root of 68380061 is about 408.9245282119.

The spelling of 68380061 in words is "sixty-eight million, three hundred eighty thousand, sixty-one".