7986460690 has 32 divisors (see below), whose sum is σ = 15485445360. Its totient is φ = 2948085504.

The previous prime is 7986460679. The next prime is 7986460711. The reversal of 7986460690 is 960646897.

It is a Cunningham number, because it is equal to 89367²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1181365641 + 6805095049 = 34371^2 + 82493^2 .

It is a super-2 number, since 2×7986460690² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 867592 + ... + 876748.

Almost surely, 2^7986460690 is an apocalyptic number.

7986460690 is a deficient number, since it is larger than the sum of its proper divisors (7498984670).

7986460690 is a wasteful number, since it uses less digits than its factorization.

7986460690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15886.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The square root of 7986460690 is about 89367.0000055949. Note that the first 5 decimals coincide. The cubic root of 7986460690 is about 1998.8710870644.

The spelling of 7986460690 in words is "seven billion, nine hundred eighty-six million, four hundred sixty thousand, six hundred ninety".