68536660884 has 24 divisors (see below), whose sum is σ = 159937649760. Its totient is φ = 22842871584.

The previous prime is 68536660873. The next prime is 68536660891. The reversal of 68536660884 is 48806663586.

It is a happy number.

It is a super-2 number, since 2×68536660884² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227394 + ... + 434489.

It is an arithmetic number, because the mean of its divisors is an integer number (6664068740).

Almost surely, 2^68536660884 is an apocalyptic number.

It is an amenable number.

68536660884 is an abundant number, since it is smaller than the sum of its proper divisors (91400988876).

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

68536660884 is a wasteful number, since it uses less digits than its factorization.

68536660884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670519 (or 670517 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 60.

The spelling of 68536660884 in words is "sixty-eight billion, five hundred thirty-six million, six hundred sixty thousand, eight hundred eighty-four".