67213513 has 2 divisors, whose sum is σ = 67213514. Its totient is φ = 67213512.

The previous prime is 67213501. The next prime is 67213519. The reversal of 67213513 is 31531276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65804544 + 1408969 = 8112^2 + 1187^2 .

It is a cyclic number.

It is not a de Polignac number, because 67213513 - 2⁹ = 67213001 is a prime.

It is not a weakly prime, because it can be changed into another prime (67213519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33606756 + 33606757.

It is an arithmetic number, because the mean of its divisors is an integer number (33606757).

Almost surely, 2^67213513 is an apocalyptic number.

It is an amenable number.

67213513 is a deficient number, since it is larger than the sum of its proper divisors (1).

67213513 is an equidigital number, since it uses as much as digits as its factorization.

67213513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 28.

The square root of 67213513 is about 8198.3847799429. The cubic root of 67213513 is about 406.5857920185.

Adding to 67213513 its reverse (31531276), we get a palindrome (98744789).

The spelling of 67213513 in words is "sixty-seven million, two hundred thirteen thousand, five hundred thirteen".