67334513 has 2 divisors, whose sum is σ = 67334514. Its totient is φ = 67334512.

The previous prime is 67334507. The next prime is 67334521. The reversal of 67334513 is 31543376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66064384 + 1270129 = 8128^2 + 1127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67334513 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 67334513.

It is not a weakly prime, because it can be changed into another prime (67334563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33667256 + 33667257.

It is an arithmetic number, because the mean of its divisors is an integer number (33667257).

Almost surely, 2^67334513 is an apocalyptic number.

It is an amenable number.

67334513 is a deficient number, since it is larger than the sum of its proper divisors (1).

67334513 is an equidigital number, since it uses as much as digits as its factorization.

67334513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 32.

The square root of 67334513 is about 8205.7609641032. The cubic root of 67334513 is about 406.8296288413.

Adding to 67334513 its reverse (31543376), we get a palindrome (98877889).

The spelling of 67334513 in words is "sixty-seven million, three hundred thirty-four thousand, five hundred thirteen".