68426217 has 6 divisors (see below), whose sum is σ = 98837882. Its totient is φ = 45617472.

The previous prime is 68426213. The next prime is 68426231. The reversal of 68426217 is 71262486.

It can be written as a sum of positive squares in only one way, i.e., 56791296 + 11634921 = 7536^2 + 3411^2 .

It is not a de Polignac number, because 68426217 - 2² = 68426213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68426213) 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 5 ways as a sum of consecutive naturals, for example, 3801448 + ... + 3801465.

Almost surely, 2^68426217 is an apocalyptic number.

It is an amenable number.

68426217 is a deficient number, since it is larger than the sum of its proper divisors (30411665).

68426217 is a wasteful number, since it uses less digits than its factorization.

68426217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7602919 (or 7602916 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 68426217 is about 8272.0140836437. The cubic root of 68426217 is about 409.0165144584.

The spelling of 68426217 in words is "sixty-eight million, four hundred twenty-six thousand, two hundred seventeen".