68925553 has 2 divisors, whose sum is σ = 68925554. Its totient is φ = 68925552.

The previous prime is 68925539. The next prime is 68925569. The reversal of 68925553 is 35552986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34492129 + 34433424 = 5873^2 + 5868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68925553 is a prime.

It is not a weakly prime, because it can be changed into another prime (68925523) 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, 34462776 + 34462777.

It is an arithmetic number, because the mean of its divisors is an integer number (34462777).

Almost surely, 2^68925553 is an apocalyptic number.

It is an amenable number.

68925553 is a deficient number, since it is larger than the sum of its proper divisors (1).

68925553 is an equidigital number, since it uses as much as digits as its factorization.

68925553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324000, while the sum is 43.

The square root of 68925553 is about 8302.1414707291. The cubic root of 68925553 is about 410.0090281573.

The spelling of 68925553 in words is "sixty-eight million, nine hundred twenty-five thousand, five hundred fifty-three".