68145201 has 6 divisors (see below), whose sum is σ = 98431970. Its totient is φ = 45430128.

The previous prime is 68145149. The next prime is 68145211. The reversal of 68145201 is 10254186.

It can be written as a sum of positive squares in only one way, i.e., 67223601 + 921600 = 8199^2 + 960^2 .

It is not a de Polignac number, because 68145201 - 2⁷ = 68145073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68145211) 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 5 ways as a sum of consecutive naturals, for example, 3785836 + ... + 3785853.

Almost surely, 2^68145201 is an apocalyptic number.

It is an amenable number.

68145201 is a deficient number, since it is larger than the sum of its proper divisors (30286769).

68145201 is a wasteful number, since it uses less digits than its factorization.

68145201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7571695 (or 7571692 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 68145201 is about 8255.0106601991. The cubic root of 68145201 is about 408.4558234586.

Adding to 68145201 its reverse (10254186), we get a palindrome (78399387).

The spelling of 68145201 in words is "sixty-eight million, one hundred forty-five thousand, two hundred one".