68201145 has 24 divisors (see below), whose sum is σ = 119550600. Its totient is φ = 35963136.

The previous prime is 68201143. The next prime is 68201149. The reversal of 68201145 is 54110286.

It can be written as a sum of positive squares in 4 ways, for example, as 6610041 + 61591104 = 2571^2 + 7848^2 .

It is not a de Polignac number, because 68201145 - 2¹ = 68201143 is a prime.

It is a super-2 number, since 2×68201145² = 9302792358622050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68201143) 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 23 ways as a sum of consecutive naturals, for example, 4510 + ... + 12519.

It is an arithmetic number, because the mean of its divisors is an integer number (4981275).

Almost surely, 2^68201145 is an apocalyptic number.

It is an amenable number.

68201145 is a deficient number, since it is larger than the sum of its proper divisors (51349455).

68201145 is a wasteful number, since it uses less digits than its factorization.

68201145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17129 (or 17126 counting only the distinct ones).

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

The square root of 68201145 is about 8258.3984524846. The cubic root of 68201145 is about 408.5675672156.

The spelling of 68201145 in words is "sixty-eight million, two hundred one thousand, one hundred forty-five".