7996490681 has 4 divisors (see below), whose sum is σ = 7997796864. Its totient is φ = 7995184500.

The previous prime is 7996490633. The next prime is 7996490693. The reversal of 7996490681 is 1860946997.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7996490681 is a prime.

It is a super-2 number, since 2×7996490681² (a number of 21 digits) contains 22 as substring.

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 7996490681.

It is not an unprimeable number, because it can be changed into a prime (7996490581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643865 + ... + 656166.

It is an arithmetic number, because the mean of its divisors is an integer number (1999449216).

Almost surely, 2^7996490681 is an apocalyptic number.

It is an amenable number.

7996490681 is a deficient number, since it is larger than the sum of its proper divisors (1306183).

7996490681 is a wasteful number, since it uses less digits than its factorization.

7996490681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306182.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The square root of 7996490681 is about 89423.0992585249. The cubic root of 7996490681 is about 1999.7075139780.

The spelling of 7996490681 in words is "seven billion, nine hundred ninety-six million, four hundred ninety thousand, six hundred eighty-one".