67298789 has 2 divisors, whose sum is σ = 67298790. Its totient is φ = 67298788.

The previous prime is 67298743. The next prime is 67298813. The reversal of 67298789 is 98789276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57501889 + 9796900 = 7583^2 + 3130^2 .

It is a cyclic number.

It is not a de Polignac number, because 67298789 - 2⁸ = 67298533 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67298719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33649394 + 33649395.

It is an arithmetic number, because the mean of its divisors is an integer number (33649395).

Almost surely, 2^67298789 is an apocalyptic number.

It is an amenable number.

67298789 is a deficient number, since it is larger than the sum of its proper divisors (1).

67298789 is an equidigital number, since it uses as much as digits as its factorization.

67298789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 56.

The square root of 67298789 is about 8203.5839119253. The cubic root of 67298789 is about 406.7576689502.

The spelling of 67298789 in words is "sixty-seven million, two hundred ninety-eight thousand, seven hundred eighty-nine".