68182481 has 2 divisors, whose sum is σ = 68182482. Its totient is φ = 68182480.

The previous prime is 68182463. The next prime is 68182493. The reversal of 68182481 is 18428186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63856081 + 4326400 = 7991^2 + 2080^2 .

It is a cyclic number.

It is not a de Polignac number, because 68182481 - 2⁶ = 68182417 is a prime.

It is a super-2 number, since 2×68182481² = 9297701430630722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68182421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34091240 + 34091241.

It is an arithmetic number, because the mean of its divisors is an integer number (34091241).

Almost surely, 2^68182481 is an apocalyptic number.

It is an amenable number.

68182481 is a deficient number, since it is larger than the sum of its proper divisors (1).

68182481 is an equidigital number, since it uses as much as digits as its factorization.

68182481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24576, while the sum is 38.

The square root of 68182481 is about 8257.2683739842. The cubic root of 68182481 is about 408.5302941328.

The spelling of 68182481 in words is "sixty-eight million, one hundred eighty-two thousand, four hundred eighty-one".