68146281 has 12 divisors (see below), whose sum is σ = 112495552. Its totient is φ = 38940696.

The previous prime is 68146261. The next prime is 68146291. The reversal of 68146281 is 18264186.

It is not a de Polignac number, because 68146281 - 2¹⁸ = 67884137 is a prime.

It is a super-2 number, since 2×68146281² = 9287831228261922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68146261) 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 11 ways as a sum of consecutive naturals, for example, 540781 + ... + 540906.

Almost surely, 2^68146281 is an apocalyptic number.

It is an amenable number.

68146281 is a deficient number, since it is larger than the sum of its proper divisors (44349271).

68146281 is a wasteful number, since it uses less digits than its factorization.

68146281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081700 (or 1081697 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 68146281 is about 8255.0760747555. The cubic root of 68146281 is about 408.4579812528.

The spelling of 68146281 in words is "sixty-eight million, one hundred forty-six thousand, two hundred eighty-one".