68305417 has 4 divisors (see below), whose sum is σ = 68700420. Its totient is φ = 67910416.

The previous prime is 68305409. The next prime is 68305427. The reversal of 68305417 is 71450386.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53743561 + 14561856 = 7331^2 + 3816^2 .

It is a cyclic number.

It is not a de Polignac number, because 68305417 - 2³ = 68305409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68305427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197242 + ... + 197587.

It is an arithmetic number, because the mean of its divisors is an integer number (17175105).

Almost surely, 2^68305417 is an apocalyptic number.

It is an amenable number.

68305417 is a deficient number, since it is larger than the sum of its proper divisors (395003).

68305417 is a wasteful number, since it uses less digits than its factorization.

68305417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395002.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 68305417 is about 8264.7091297879. The cubic root of 68305417 is about 408.7756793837.

The spelling of 68305417 in words is "sixty-eight million, three hundred five thousand, four hundred seventeen".