67668859 has 2 divisors, whose sum is σ = 67668860. Its totient is φ = 67668858.

The previous prime is 67668791. The next prime is 67668907. The reversal of 67668859 is 95886676.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67668859 - 2¹¹ = 67666811 is a prime.

It is not a weakly prime, because it can be changed into another prime (67669859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33834429 + 33834430.

It is an arithmetic number, because the mean of its divisors is an integer number (33834430).

Almost surely, 2^67668859 is an apocalyptic number.

67668859 is a deficient number, since it is larger than the sum of its proper divisors (1).

67668859 is an equidigital number, since it uses as much as digits as its factorization.

67668859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 55.

The square root of 67668859 is about 8226.1083751674. The cubic root of 67668859 is about 407.5018811310.

It can be divided in two parts, 6766 and 8859, that added together give a 6-th power (15625 = 5⁶).

The spelling of 67668859 in words is "sixty-seven million, six hundred sixty-eight thousand, eight hundred fifty-nine".