67972832656 has 15 divisors (see below), whose sum is σ = 131699383851. Its totient is φ = 33985894896.

The previous prime is 67972832639. The next prime is 67972832663. The reversal of 67972832656 is 65623827976.

The square root of 67972832656 is 260716.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67972832594 and 67972832603.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1010275 + ... + 1075453.

Almost surely, 2^67972832656 is an apocalyptic number.

67972832656 is the 260716-th square number.

It is an amenable number.

67972832656 is a deficient number, since it is larger than the sum of its proper divisors (63726551195).

67972832656 is an frugal number, since it uses more digits than its factorization.

67972832656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130366 (or 65181 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 61.

The spelling of 67972832656 in words is "sixty-seven billion, nine hundred seventy-two million, eight hundred thirty-two thousand, six hundred fifty-six".