68871604356 has 81 divisors (see below), whose sum is σ = 175775926053. Its totient is φ = 22737281760.

The previous prime is 68871604337. The next prime is 68871604391. The reversal of 68871604356 is 65340617886.

The square root of 68871604356 is 262434.

It is a perfect power (a square), and thus also a powerful number.

68871604356 is a `hidden beast` number, since 6 + 88 + 71 + 60 + 435 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 64143666756 + 4727937600 = 253266^2 + 68760^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 300749250 + ... + 300749478.

Almost surely, 2^68871604356 is an apocalyptic number.

68871604356 is the 262434-th square number.

It is an amenable number.

68871604356 is an abundant number, since it is smaller than the sum of its proper divisors (106904321697).

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

68871604356 is a wasteful number, since it uses less digits than its factorization.

68871604356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 68871604356 in words is "sixty-eight billion, eight hundred seventy-one million, six hundred four thousand, three hundred fifty-six".