68821000605 has 48 divisors (see below), whose sum is σ = 136450289664. Its totient is φ = 31433529600.

The previous prime is 68821000559. The next prime is 68821000627. The reversal of 68821000605 is 50600012886.

It is a happy number.

It is not a de Polignac number, because 68821000605 - 2⁸ = 68821000349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68821000605.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 267657 + ... + 457473.

It is an arithmetic number, because the mean of its divisors is an integer number (2842714368).

Almost surely, 2^68821000605 is an apocalyptic number.

It is an amenable number.

68821000605 is a deficient number, since it is larger than the sum of its proper divisors (67629289059).

68821000605 is a wasteful number, since it uses less digits than its factorization.

68821000605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190986 (or 190983 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 68821000605 in words is "sixty-eight billion, eight hundred twenty-one million, six hundred five", and thus it is an aban number.