68623217 has 8 divisors (see below), whose sum is σ = 75705000. Its totient is φ = 61799040.

The previous prime is 68623207. The next prime is 68623229. The reversal of 68623217 is 71232686.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7845601 + 60777616 = 2801^2 + 7796^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68623217 - 2⁴ = 68623201 is a prime.

It is a super-2 number, since 2×68623217² = 9418291822858178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68623207) 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 7 ways as a sum of consecutive naturals, for example, 63842 + ... + 64907.

It is an arithmetic number, because the mean of its divisors is an integer number (9463125).

Almost surely, 2^68623217 is an apocalyptic number.

It is an amenable number.

68623217 is a deficient number, since it is larger than the sum of its proper divisors (7081783).

68623217 is a wasteful number, since it uses less digits than its factorization.

68623217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128803.

The product of its digits is 24192, while the sum is 35.

The square root of 68623217 is about 8283.9131453680. The cubic root of 68623217 is about 409.4086597190.

The spelling of 68623217 in words is "sixty-eight million, six hundred twenty-three thousand, two hundred seventeen".