67885513 has 2 divisors, whose sum is σ = 67885514. Its totient is φ = 67885512.

The previous prime is 67885511. The next prime is 67885529. The reversal of 67885513 is 31558876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42614784 + 25270729 = 6528^2 + 5027^2 .

It is a cyclic number.

It is not a de Polignac number, because 67885513 - 2¹ = 67885511 is a prime.

Together with 67885511, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 67885513.

It is not a weakly prime, because it can be changed into another prime (67885511) 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, 33942756 + 33942757.

It is an arithmetic number, because the mean of its divisors is an integer number (33942757).

Almost surely, 2^67885513 is an apocalyptic number.

It is an amenable number.

67885513 is a deficient number, since it is larger than the sum of its proper divisors (1).

67885513 is an equidigital number, since it uses as much as digits as its factorization.

67885513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 43.

The square root of 67885513 is about 8239.2665328899. The cubic root of 67885513 is about 407.9363146304.

The spelling of 67885513 in words is "sixty-seven million, eight hundred eighty-five thousand, five hundred thirteen".