799974614569 has 27 divisors (see below), whose sum is σ = 875778122583. Its totient is φ = 730399121712.

The previous prime is 799974614507. The next prime is 799974614611. The reversal of 799974614569 is 965416479997.

The square root of 799974614569 is 894413.

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

It can be written as a sum of positive squares in only one way, i.e., 118339440025 + 681635174544 = 344005^2 + 825612^2 .

It is not a de Polignac number, because 799974614569 - 2¹⁹ = 799974090281 is a prime.

It is a super-2 number, since 2×799974614569² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 799974614495 and 799974614504.

It is not an unprimeable number, because it can be changed into a prime (799974614669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1244128162 + ... + 1244128804.

Almost surely, 2^799974614569 is an apocalyptic number.

799974614569 is the 894413-rd square number.

799974614569 is the 447207-th centered octagonal number.

It is an amenable number.

799974614569 is a deficient number, since it is larger than the sum of its proper divisors (75803508014).

799974614569 is an frugal number, since it uses more digits than its factorization.

799974614569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526 (or 763 counting only the distinct ones).

The product of its digits is 925888320, while the sum is 76.

The spelling of 799974614569 in words is "seven hundred ninety-nine billion, nine hundred seventy-four million, six hundred fourteen thousand, five hundred sixty-nine".