68688697 has 16 divisors (see below), whose sum is σ = 85825152. Its totient is φ = 53406720.

The previous prime is 68688679. The next prime is 68688703. The reversal of 68688697 is 79688686.

It is a cyclic number.

It is not a de Polignac number, because 68688697 - 2¹⁵ = 68655929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68688497) 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 15 ways as a sum of consecutive naturals, for example, 55833 + ... + 57049.

It is an arithmetic number, because the mean of its divisors is an integer number (5364072).

Almost surely, 2^68688697 is an apocalyptic number.

It is an amenable number.

68688697 is a deficient number, since it is larger than the sum of its proper divisors (17136455).

68688697 is a wasteful number, since it uses less digits than its factorization.

68688697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968.

The product of its digits is 6967296, while the sum is 58.

The square root of 68688697 is about 8287.8644414590. The cubic root of 68688697 is about 409.5388370264.

The spelling of 68688697 in words is "sixty-eight million, six hundred eighty-eight thousand, six hundred ninety-seven".