67241989 has 2 divisors, whose sum is σ = 67241990. Its totient is φ = 67241988.

The previous prime is 67241963. The next prime is 67242011. The reversal of 67241989 is 98914276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57988225 + 9253764 = 7615^2 + 3042^2 .

It is a cyclic number.

It is not a de Polignac number, because 67241989 - 2¹⁵ = 67209221 is a prime.

It is a super-2 number, since 2×67241989² = 9042970169352242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67241939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33620994 + 33620995.

It is an arithmetic number, because the mean of its divisors is an integer number (33620995).

Almost surely, 2^67241989 is an apocalyptic number.

It is an amenable number.

67241989 is a deficient number, since it is larger than the sum of its proper divisors (1).

67241989 is an equidigital number, since it uses as much as digits as its factorization.

67241989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 67241989 is about 8200.1212795909. The cubic root of 67241989 is about 406.6432026087.

The spelling of 67241989 in words is "sixty-seven million, two hundred forty-one thousand, nine hundred eighty-nine".