60687044655721 has 9 divisors (see below), whose sum is σ = 66705688729533. Its totient is φ = 55169962694220.

The previous prime is 60687044655719. The next prime is 60687044655749. The reversal of 60687044655721 is 12755644078606.

The square root of 60687044655721 is 7790189.

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

It is not a de Polignac number, because 60687044655721 - 2¹ = 60687044655719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 60687044655721.

It is not an unprimeable number, because it can be changed into a prime (60687044655121) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 85337980 + ... + 86046178.

Almost surely, 2^{60687044655721} is an apocalyptic number.

60687044655721 is the 7790189-th square number.

60687044655721 is the 3895095-th centered octagonal number.

It is an amenable number.

60687044655721 is a deficient number, since it is larger than the sum of its proper divisors (6018644073812).

60687044655721 is an frugal number, since it uses more digits than its factorization.

60687044655721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416420 (or 708210 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 61.

The spelling of 60687044655721 in words is "sixty trillion, six hundred eighty-seven billion, forty-four million, six hundred fifty-five thousand, seven hundred twenty-one".