68521367 has 4 divisors (see below), whose sum is σ = 69291360. Its totient is φ = 67751376.

The previous prime is 68521363. The next prime is 68521417. The reversal of 68521367 is 76312586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68521367 - 2² = 68521363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68521367.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68521363) 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 3 ways as a sum of consecutive naturals, for example, 384863 + ... + 385040.

It is an arithmetic number, because the mean of its divisors is an integer number (17322840).

Almost surely, 2^68521367 is an apocalyptic number.

68521367 is a deficient number, since it is larger than the sum of its proper divisors (769993).

68521367 is an equidigital number, since it uses as much as digits as its factorization.

68521367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769992.

The product of its digits is 60480, while the sum is 38.

The square root of 68521367 is about 8277.7634056549. The cubic root of 68521367 is about 409.2060124700.

The spelling of 68521367 in words is "sixty-eight million, five hundred twenty-one thousand, three hundred sixty-seven".