68533217 has 4 divisors (see below), whose sum is σ = 68557716. Its totient is φ = 68508720.

The previous prime is 68533207. The next prime is 68533229. The reversal of 68533217 is 71233586.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71233586 = 2 ⋅35616793.

It can be written as a sum of positive squares in 2 ways, for example, as 24960016 + 43573201 = 4996^2 + 6601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68533217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68533207) 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, 7418 + ... + 13859.

It is an arithmetic number, because the mean of its divisors is an integer number (17139429).

Almost surely, 2^68533217 is an apocalyptic number.

It is an amenable number.

68533217 is a deficient number, since it is larger than the sum of its proper divisors (24499).

68533217 is a wasteful number, since it uses less digits than its factorization.

68533217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24498.

The product of its digits is 30240, while the sum is 35.

The square root of 68533217 is about 8278.4791477662. The cubic root of 68533217 is about 409.2296003033.

The spelling of 68533217 in words is "sixty-eight million, five hundred thirty-three thousand, two hundred seventeen".