68704517 has 12 divisors (see below), whose sum is σ = 80088876. Its totient is φ = 58766400.

The previous prime is 68704511. The next prime is 68704577. The reversal of 68704517 is 71540786.

It can be written as a sum of positive squares in 2 ways, for example, as 41654116 + 27050401 = 6454^2 + 5201^2 .

It is not a de Polignac number, because 68704517 - 2⁶ = 68704453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68704511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28283 + ... + 30615.

It is an arithmetic number, because the mean of its divisors is an integer number (6674073).

Almost surely, 2^68704517 is an apocalyptic number.

It is an amenable number.

68704517 is a deficient number, since it is larger than the sum of its proper divisors (11384359).

68704517 is a wasteful number, since it uses less digits than its factorization.

68704517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2948 (or 2941 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 68704517 is about 8288.8187940140. The cubic root of 68704517 is about 409.5702755180.

The spelling of 68704517 in words is "sixty-eight million, seven hundred four thousand, five hundred seventeen".