67420289 has 2 divisors, whose sum is σ = 67420290. Its totient is φ = 67420288.

The previous prime is 67420271. The next prime is 67420307. The reversal of 67420289 is 98202476.

It is a balanced prime because it is at equal distance from previous prime (67420271) and next prime (67420307).

It can be written as a sum of positive squares in only one way, i.e., 42250000 + 25170289 = 6500^2 + 5017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67420289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (67420219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33710144 + 33710145.

It is an arithmetic number, because the mean of its divisors is an integer number (33710145).

Almost surely, 2^67420289 is an apocalyptic number.

It is an amenable number.

67420289 is a deficient number, since it is larger than the sum of its proper divisors (1).

67420289 is an equidigital number, since it uses as much as digits as its factorization.

67420289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 67420289 is about 8210.9858725978. The cubic root of 67420289 is about 407.0023060679.

The spelling of 67420289 in words is "sixty-seven million, four hundred twenty thousand, two hundred eighty-nine".