68280105 has 16 divisors (see below), whose sum is σ = 109569600. Its totient is φ = 36308928.

The previous prime is 68280103. The next prime is 68280131. The reversal of 68280105 is 50108286.

It is not a de Polignac number, because 68280105 - 2¹ = 68280103 is a prime.

It is a super-2 number, since 2×68280105² = 9324345477622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68280101) 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 in 15 ways as a sum of consecutive naturals, for example, 1287 + ... + 11756.

It is an arithmetic number, because the mean of its divisors is an integer number (6848100).

Almost surely, 2^68280105 is an apocalyptic number.

It is an amenable number.

68280105 is a deficient number, since it is larger than the sum of its proper divisors (41289495).

68280105 is a wasteful number, since it uses less digits than its factorization.

68280105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13400.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 68280105 is about 8263.1776575359. The cubic root of 68280105 is about 408.7251796879.

The spelling of 68280105 in words is "sixty-eight million, two hundred eighty thousand, one hundred five".