68866869 has 8 divisors (see below), whose sum is σ = 91979712. Its totient is φ = 45832640.

The previous prime is 68866859. The next prime is 68866871. The reversal of 68866869 is 96866886.

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 68866869 - 2⁸ = 68866613 is a prime.

It is a super-2 number, since 2×68866869² = 9485291291726322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68866859) 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, 17577 + ... + 21134.

It is an arithmetic number, because the mean of its divisors is an integer number (11497464).

Almost surely, 2^68866869 is an apocalyptic number.

It is an amenable number.

68866869 is a deficient number, since it is larger than the sum of its proper divisors (23112843).

68866869 is a wasteful number, since it uses less digits than its factorization.

68866869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39307.

The product of its digits is 5971968, while the sum is 57.

The square root of 68866869 is about 8298.6064492781. The cubic root of 68866869 is about 409.8926330006.

The spelling of 68866869 in words is "sixty-eight million, eight hundred sixty-six thousand, eight hundred sixty-nine".