67486813 has 2 divisors, whose sum is σ = 67486814. Its totient is φ = 67486812.

The previous prime is 67486763. The next prime is 67486847. The reversal of 67486813 is 31868476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66292164 + 1194649 = 8142^2 + 1093^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67486813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67486813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67486513) 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, 33743406 + 33743407.

It is an arithmetic number, because the mean of its divisors is an integer number (33743407).

Almost surely, 2^67486813 is an apocalyptic number.

It is an amenable number.

67486813 is a deficient number, since it is larger than the sum of its proper divisors (1).

67486813 is an equidigital number, since it uses as much as digits as its factorization.

67486813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 67486813 is about 8215.0357881144. The cubic root of 67486813 is about 407.1361259290.

The spelling of 67486813 in words is "sixty-seven million, four hundred eighty-six thousand, eight hundred thirteen".