68430553 has 4 divisors (see below), whose sum is σ = 68527780. Its totient is φ = 68333328.

The previous prime is 68430503. The next prime is 68430569. The reversal of 68430553 is 35503486.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21603904 + 46826649 = 4648^2 + 6843^2 .

It is a cyclic number.

It is not a de Polignac number, because 68430553 - 2⁹ = 68430041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68430503) 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 in 3 ways as a sum of consecutive naturals, for example, 47550 + ... + 48967.

It is an arithmetic number, because the mean of its divisors is an integer number (17131945).

Almost surely, 2^68430553 is an apocalyptic number.

It is an amenable number.

68430553 is a deficient number, since it is larger than the sum of its proper divisors (97227).

68430553 is an equidigital number, since it uses as much as digits as its factorization.

68430553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97226.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 68430553 is about 8272.2761680205. The cubic root of 68430553 is about 409.0251537306.

The spelling of 68430553 in words is "sixty-eight million, four hundred thirty thousand, five hundred fifty-three".