68564222660 has 48 divisors (see below), whose sum is σ = 149773019760. Its totient is φ = 26333637120.

The previous prime is 68564222651. The next prime is 68564222693. The reversal of 68564222660 is 6622246586.

It can be written as a sum of positive squares in 8 ways, for example, as 429649984 + 68134572676 = 20728^2 + 261026^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221579 + ... + 431538.

It is an arithmetic number, because the mean of its divisors is an integer number (3120271245).

Almost surely, 2^68564222660 is an apocalyptic number.

It is an amenable number.

68564222660 is an abundant number, since it is smaller than the sum of its proper divisors (81208797100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68564222660 is a wasteful number, since it uses less digits than its factorization.

68564222660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653336 (or 653334 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 47.

The spelling of 68564222660 in words is "sixty-eight billion, five hundred sixty-four million, two hundred twenty-two thousand, six hundred sixty".