68645654686 has 32 divisors (see below), whose sum is σ = 129257602560. Its totient is φ = 26659375776.

The previous prime is 68645654669. The next prime is 68645654687.

68645654686 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×68645654686³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68645654687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5604021 + ... + 5616256.

It is an arithmetic number, because the mean of its divisors is an integer number (4039300080).

Almost surely, 2^68645654686 is an apocalyptic number.

68645654686 is a deficient number, since it is larger than the sum of its proper divisors (60611947874).

68645654686 is a wasteful number, since it uses less digits than its factorization.

68645654686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11220328.

The product of its digits is 199065600, while the sum is 64.

The spelling of 68645654686 in words is "sixty-eight billion, six hundred forty-five million, six hundred fifty-four thousand, six hundred eighty-six".