7996081669 has 8 divisors (see below), whose sum is σ = 8011163160. Its totient is φ = 7981015296.

The previous prime is 7996081603. The next prime is 7996081697. The reversal of 7996081669 is 9661806997.

It can be written as a sum of positive squares in 4 ways, for example, as 245392225 + 7750689444 = 15665^2 + 88038^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7996081669 - 2⁹ = 7996081157 is a prime.

It is a super-2 number, since 2×7996081669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7996084669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1688497 + ... + 1693225.

It is an arithmetic number, because the mean of its divisors is an integer number (1001395395).

Almost surely, 2^7996081669 is an apocalyptic number.

It is an amenable number.

7996081669 is a deficient number, since it is larger than the sum of its proper divisors (15081491).

7996081669 is a wasteful number, since it uses less digits than its factorization.

7996081669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7559.

The product of its (nonzero) digits is 8817984, while the sum is 61.

The square root of 7996081669 is about 89420.8122810344. The cubic root of 7996081669 is about 1999.6734190920.

The spelling of 7996081669 in words is "seven billion, nine hundred ninety-six million, eighty-one thousand, six hundred sixty-nine".