67682449 has 2 divisors, whose sum is σ = 67682450. Its totient is φ = 67682448.

The previous prime is 67682443. The next prime is 67682467. The reversal of 67682449 is 94428676.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59954049 + 7728400 = 7743^2 + 2780^2 .

It is a cyclic number.

It is not a de Polignac number, because 67682449 - 2³ = 67682441 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 67682399 and 67682408.

It is not a weakly prime, because it can be changed into another prime (67682441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33841224 + 33841225.

It is an arithmetic number, because the mean of its divisors is an integer number (33841225).

Almost surely, 2^67682449 is an apocalyptic number.

It is an amenable number.

67682449 is a deficient number, since it is larger than the sum of its proper divisors (1).

67682449 is an equidigital number, since it uses as much as digits as its factorization.

67682449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 46.

The square root of 67682449 is about 8226.9343622032. The cubic root of 67682449 is about 407.5291589658.

The spelling of 67682449 in words is "sixty-seven million, six hundred eighty-two thousand, four hundred forty-nine".