68301281 has 4 divisors (see below), whose sum is σ = 69124272. Its totient is φ = 67478292.

The previous prime is 68301271. The next prime is 68301301. The reversal of 68301281 is 18210386.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68301281 - 2¹⁰ = 68300257 is a prime.

It is a super-2 number, since 2×68301281² = 9330129972481922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68301241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411371 + ... + 411536.

It is an arithmetic number, because the mean of its divisors is an integer number (17281068).

Almost surely, 2^68301281 is an apocalyptic number.

It is an amenable number.

68301281 is a deficient number, since it is larger than the sum of its proper divisors (822991).

68301281 is an equidigital number, since it uses as much as digits as its factorization.

68301281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822990.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 68301281 is about 8264.4589054578. The cubic root of 68301281 is about 408.7674285479.

The spelling of 68301281 in words is "sixty-eight million, three hundred one thousand, two hundred eighty-one".