67730693 has 2 divisors, whose sum is σ = 67730694. Its totient is φ = 67730692.

The previous prime is 67730659. The next prime is 67730717. The reversal of 67730693 is 39603776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65820769 + 1909924 = 8113^2 + 1382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67730693 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67730693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67730393) 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, 33865346 + 33865347.

It is an arithmetic number, because the mean of its divisors is an integer number (33865347).

Almost surely, 2^67730693 is an apocalyptic number.

It is an amenable number.

67730693 is a deficient number, since it is larger than the sum of its proper divisors (1).

67730693 is an equidigital number, since it uses as much as digits as its factorization.

67730693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 41.

The square root of 67730693 is about 8229.8659162832. The cubic root of 67730693 is about 407.6259647969.

The spelling of 67730693 in words is "sixty-seven million, seven hundred thirty thousand, six hundred ninety-three".