68549653 has 2 divisors, whose sum is σ = 68549654. Its totient is φ = 68549652.

The previous prime is 68549651. The next prime is 68549671. The reversal of 68549653 is 35694586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68277169 + 272484 = 8263^2 + 522^2 .

It is a cyclic number.

It is not a de Polignac number, because 68549653 - 2¹ = 68549651 is a prime.

Together with 68549651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68549651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34274826 + 34274827.

It is an arithmetic number, because the mean of its divisors is an integer number (34274827).

Almost surely, 2^68549653 is an apocalyptic number.

It is an amenable number.

68549653 is a deficient number, since it is larger than the sum of its proper divisors (1).

68549653 is an equidigital number, since it uses as much as digits as its factorization.

68549653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 46.

The square root of 68549653 is about 8279.4717826683. The cubic root of 68549653 is about 409.2623122269.

The spelling of 68549653 in words is "sixty-eight million, five hundred forty-nine thousand, six hundred fifty-three".