68166061 has 2 divisors, whose sum is σ = 68166062. Its totient is φ = 68166060.

The previous prime is 68166041. The next prime is 68166113. The reversal of 68166061 is 16066186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45981961 + 22184100 = 6781^2 + 4710^2 .

It is a cyclic number.

It is not a de Polignac number, because 68166061 - 2¹⁵ = 68133293 is a prime.

It is a super-2 number, since 2×68166061² = 9293223744511442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68166031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34083030 + 34083031.

It is an arithmetic number, because the mean of its divisors is an integer number (34083031).

Almost surely, 2^68166061 is an apocalyptic number.

It is an amenable number.

68166061 is a deficient number, since it is larger than the sum of its proper divisors (1).

68166061 is an equidigital number, since it uses as much as digits as its factorization.

68166061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 68166061 is about 8256.2740385721. The cubic root of 68166061 is about 408.4974968223.

The spelling of 68166061 in words is "sixty-eight million, one hundred sixty-six thousand, sixty-one".