68973187 has 2 divisors, whose sum is σ = 68973188. Its totient is φ = 68973186.

The previous prime is 68973167. The next prime is 68973227. The reversal of 68973187 is 78137986.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68973187 - 2¹¹ = 68971139 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 68973187.

It is not a weakly prime, because it can be changed into another prime (68973137) 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, 34486593 + 34486594.

It is an arithmetic number, because the mean of its divisors is an integer number (34486594).

Almost surely, 2^68973187 is an apocalyptic number.

68973187 is a deficient number, since it is larger than the sum of its proper divisors (1).

68973187 is an equidigital number, since it uses as much as digits as its factorization.

68973187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 49.

The square root of 68973187 is about 8305.0097531550. The cubic root of 68973187 is about 410.1034579289.

The spelling of 68973187 in words is "sixty-eight million, nine hundred seventy-three thousand, one hundred eighty-seven".