67716413 has 2 divisors, whose sum is σ = 67716414. Its totient is φ = 67716412.

The previous prime is 67716409. The next prime is 67716427. The reversal of 67716413 is 31461776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61748164 + 5968249 = 7858^2 + 2443^2 .

It is a cyclic number.

It is not a de Polignac number, because 67716413 - 2² = 67716409 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67716433) 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, 33858206 + 33858207.

It is an arithmetic number, because the mean of its divisors is an integer number (33858207).

Almost surely, 2^67716413 is an apocalyptic number.

It is an amenable number.

67716413 is a deficient number, since it is larger than the sum of its proper divisors (1).

67716413 is an equidigital number, since it uses as much as digits as its factorization.

67716413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 67716413 is about 8228.9982986995. The cubic root of 67716413 is about 407.5973155113.

The spelling of 67716413 in words is "sixty-seven million, seven hundred sixteen thousand, four hundred thirteen".