68187653 has 2 divisors, whose sum is σ = 68187654. Its totient is φ = 68187652.

The previous prime is 68187649. The next prime is 68187659. The reversal of 68187653 is 35678186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68178049 + 9604 = 8257^2 + 98^2 .

It is a cyclic number.

It is not a de Polignac number, because 68187653 - 2² = 68187649 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68187659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34093826 + 34093827.

It is an arithmetic number, because the mean of its divisors is an integer number (34093827).

Almost surely, 2^68187653 is an apocalyptic number.

It is an amenable number.

68187653 is a deficient number, since it is larger than the sum of its proper divisors (1).

68187653 is an equidigital number, since it uses as much as digits as its factorization.

68187653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 68187653 is about 8257.5815466758. The cubic root of 68187653 is about 408.5406235958.

The spelling of 68187653 in words is "sixty-eight million, one hundred eighty-seven thousand, six hundred fifty-three".