68393887 has 2 divisors, whose sum is σ = 68393888. Its totient is φ = 68393886.

The previous prime is 68393807. The next prime is 68393891. The reversal of 68393887 is 78839386.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68393887 - 2¹¹ = 68391839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68393807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34196943 + 34196944.

It is an arithmetic number, because the mean of its divisors is an integer number (34196944).

Almost surely, 2^68393887 is an apocalyptic number.

68393887 is a deficient number, since it is larger than the sum of its proper divisors (1).

68393887 is an equidigital number, since it uses as much as digits as its factorization.

68393887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 52.

The square root of 68393887 is about 8270.0596733035. The cubic root of 68393887 is about 408.9520869741.

The spelling of 68393887 in words is "sixty-eight million, three hundred ninety-three thousand, eight hundred eighty-seven".