68828086664 has 16 divisors (see below), whose sum is σ = 129288598800. Its totient is φ = 34351126992.

The previous prime is 68828086633. The next prime is 68828086667. The reversal of 68828086664 is 46668082886.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 68828086597 and 68828086606.

It is not an unprimeable number, because it can be changed into a prime (68828086667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7859894 + ... + 7868645.

It is an arithmetic number, because the mean of its divisors is an integer number (8080537425).

Almost surely, 2^68828086664 is an apocalyptic number.

It is an amenable number.

68828086664 is a deficient number, since it is larger than the sum of its proper divisors (60460512136).

68828086664 is a wasteful number, since it uses less digits than its factorization.

68828086664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15729092 (or 15729088 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 62.

The spelling of 68828086664 in words is "sixty-eight billion, eight hundred twenty-eight million, eighty-six thousand, six hundred sixty-four".