68625559 has 2 divisors, whose sum is σ = 68625560. Its totient is φ = 68625558.

The previous prime is 68625553. The next prime is 68625569. The reversal of 68625559 is 95552686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68625559 - 2⁵ = 68625527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68625553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34312779 + 34312780.

It is an arithmetic number, because the mean of its divisors is an integer number (34312780).

Almost surely, 2^68625559 is an apocalyptic number.

68625559 is a deficient number, since it is larger than the sum of its proper divisors (1).

68625559 is an equidigital number, since it uses as much as digits as its factorization.

68625559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 46.

The square root of 68625559 is about 8284.0545024764. The cubic root of 68625559 is about 409.4133171523.

It can be divided in two parts, 6862 and 5559, that added together give a palindrome (12421).

The spelling of 68625559 in words is "sixty-eight million, six hundred twenty-five thousand, five hundred fifty-nine".