798447686481 has 9 divisors (see below), whose sum is σ = 1153317197019. Its totient is φ = 532296670536.

The previous prime is 798447686479. The next prime is 798447686489. The reversal of 798447686481 is 184686744897.

The square root of 798447686481 is 893559.

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

798447686481 is a `hidden beast` number, since 7 + 9 + 84 + 4 + 7 + 68 + 6 + 481 = 666.

It can be written as a sum of positive squares in only one way, i.e., 420857100225 + 377590586256 = 648735^2 + 614484^2 .

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

It is not a de Polignac number, because 798447686481 - 2¹ = 798447686479 is a prime.

It is a super-2 number, since 2×798447686481² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (798447686489) 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, 2531751 + ... + 2829603.

Almost surely, 2^798447686481 is an apocalyptic number.

798447686481 is the 893559-th square number.

798447686481 is the 446780-th centered octagonal number.

It is an amenable number.

798447686481 is a deficient number, since it is larger than the sum of its proper divisors (354869510538).

798447686481 is an frugal number, since it uses more digits than its factorization.

798447686481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595712 (or 297856 counting only the distinct ones).

The product of its digits is 520224768, while the sum is 72.

The spelling of 798447686481 in words is "seven hundred ninety-eight billion, four hundred forty-seven million, six hundred eighty-six thousand, four hundred eighty-one".