1063086785721 has 9 divisors (see below), whose sum is σ = 1535574269541. Its totient is φ = 708722461692.

The previous prime is 1063086785711. The next prime is 1063086785797. The reversal of 1063086785721 is 1275876803601.

It is a happy number.

The square root of 1063086785721 is 1031061.

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

1063086785721 is a `hidden beast` number, since 1 + 0 + 6 + 3 + 0 + 8 + 67 + 8 + 572 + 1 = 666.

1063086785721 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (9).

It is a de Polignac number, because none of the positive numbers 2^k-1063086785721 is a prime.

It is a super-2 number, since 2×1063086785721² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1063086785711) 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, 2921340 + ... + 3265026.

Almost surely, 2^{1063086785721} is an apocalyptic number.

1063086785721 is the 1031061-st square number.

1063086785721 is the 515531-st centered octagonal number.

It is an amenable number.

1063086785721 is a deficient number, since it is larger than the sum of its proper divisors (472487483820).

1063086785721 is an frugal number, since it uses more digits than its factorization.

1063086785721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687380 (or 343690 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 1063086785721 in words is "one trillion, sixty-three billion, eighty-six million, seven hundred eighty-five thousand, seven hundred twenty-one".