67825789 has 2 divisors, whose sum is σ = 67825790. Its totient is φ = 67825788.

The previous prime is 67825787. The next prime is 67825829. The reversal of 67825789 is 98752876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47844889 + 19980900 = 6917^2 + 4470^2 .

It is a cyclic number.

It is not a de Polignac number, because 67825789 - 2¹ = 67825787 is a prime.

Together with 67825787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67825783) 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, 33912894 + 33912895.

It is an arithmetic number, because the mean of its divisors is an integer number (33912895).

Almost surely, 2^67825789 is an apocalyptic number.

It is an amenable number.

67825789 is a deficient number, since it is larger than the sum of its proper divisors (1).

67825789 is an equidigital number, since it uses as much as digits as its factorization.

67825789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 52.

The square root of 67825789 is about 8235.6413836446. The cubic root of 67825789 is about 407.8166487611.

The spelling of 67825789 in words is "sixty-seven million, eight hundred twenty-five thousand, seven hundred eighty-nine".